Finding the Fourth Proportional to 656,686.14, 906,187.82 and 381,022.71
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Solution
The fourth proportional to 656,686.14, 906,187.82 and 381,022.71 is: 525,788.68
Step by Step Solution
- Step 1: Write the proportion equation
656,686.14 : 906,187.82 = 381,022.71 : x - Step 2: Convert to fraction form
656,686.14/906,187.82 = 381,022.71/x - Step 3: Cross multiply
656,686.14x = 906,187.82 × 381,022.71 - Step 4: Simplify right side
656,686.14x = 345,278,137,040.28 - Step 5: Solve for x
x = 345,278,137,040.28/656,686.14 - Step 6: Final answer
x = 525,788.68
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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.