Finding the Fourth Proportional to 718,402.14, 991,383.99 and 396,103.95
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Solution
The fourth proportional to 718,402.14, 991,383.99 and 396,103.95 is: 546,617.41
Step by Step Solution
- Step 1: Write the proportion equation
718,402.14 : 991,383.99 = 396,103.95 : x - Step 2: Convert to fraction form
718,402.14/991,383.99 = 396,103.95/x - Step 3: Cross multiply
718,402.14x = 991,383.99 × 396,103.95 - Step 4: Simplify right side
718,402.14x = 392,691,114,405.76 - Step 5: Solve for x
x = 392,691,114,405.76/718,402.14 - Step 6: Final answer
x = 546,617.41
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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.