Finding the Fourth Proportional to 721,779.76, 996,058.04 and 399,512.08
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Solution
The fourth proportional to 721,779.76, 996,058.04 and 399,512.08 is: 551,327.76
Step by Step Solution
- Step 1: Write the proportion equation
721,779.76 : 996,058.04 = 399,512.08 : x - Step 2: Convert to fraction form
721,779.76/996,058.04 = 399,512.08/x - Step 3: Cross multiply
721,779.76x = 996,058.04 × 399,512.08 - Step 4: Simplify right side
721,779.76x = 397,937,219,361.12 - Step 5: Solve for x
x = 397,937,219,361.12/721,779.76 - Step 6: Final answer
x = 551,327.76
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.