Finding the Fourth Proportional to 512,944.79, 707,841.78 and 283,490.21
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Solution
The fourth proportional to 512,944.79, 707,841.78 and 283,490.21 is: 391,204.32
Step by Step Solution
- Step 1: Write the proportion equation
512,944.79 : 707,841.78 = 283,490.21 : x - Step 2: Convert to fraction form
512,944.79/707,841.78 = 283,490.21/x - Step 3: Cross multiply
512,944.79x = 707,841.78 × 283,490.21 - Step 4: Simplify right side
512,944.79x = 200,666,215,565.49 - Step 5: Solve for x
x = 200,666,215,565.49/512,944.79 - Step 6: Final answer
x = 391,204.32
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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.