Finding the Fourth Proportional to 664,780.98, 917,385.12 and 406,639.02
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Solution
The fourth proportional to 664,780.98, 917,385.12 and 406,639.02 is: 561,154.12
Step by Step Solution
- Step 1: Write the proportion equation
664,780.98 : 917,385.12 = 406,639.02 : x - Step 2: Convert to fraction form
664,780.98/917,385.12 = 406,639.02/x - Step 3: Cross multiply
664,780.98x = 917,385.12 × 406,639.02 - Step 4: Simplify right side
664,780.98x = 373,044,586,159.38 - Step 5: Solve for x
x = 373,044,586,159.38/664,780.98 - Step 6: Final answer
x = 561,154.12
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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.