To determine the bond's market value one year from now: FV = 10,000,000; N = 4; I = 4; PMT = 450,000; CPT → PV = $10,181,495.

To determine the total interest expense:

1. FV = 10,000,000; N = 6; I = 4; PMT = 450,000; CPT → PV = $10,262,107. This is the price the purchaser of the bond will pay to the issuer of the bond. From the issuer's point of view this is the amount the issuer will receive from the bondholder.
2. Total interest expense over the life of the bond is equal to the difference between the amount paid by the issuer and the amount received from the bondholder.

[(6)(450,000) + 10,000,000] – 10,262,107 = 2,437,893