Finding the Fourth Proportional to 1,008,490.08, 1,391,716.31 and 555,781.08
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Solution
The fourth proportional to 1,008,490.08, 1,391,716.31 and 555,781.08 is: 766,977.89
Step by Step Solution
- Step 1: Write the proportion equation
1,008,490.08 : 1,391,716.31 = 555,781.08 : x - Step 2: Convert to fraction form
1,008,490.08/1,391,716.31 = 555,781.08/x - Step 3: Cross multiply
1,008,490.08x = 1,391,716.31 × 555,781.08 - Step 4: Simplify right side
1,008,490.08x = 773,489,591,046.51 - Step 5: Solve for x
x = 773,489,591,046.51/1,008,490.08 - Step 6: Final answer
x = 766,977.89
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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.