Finding the Fourth Proportional to 664,693.97, 917,225.88 and 392,710.28
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Solution
The fourth proportional to 664,693.97, 917,225.88 and 392,710.28 is: 541,909.58
Step by Step Solution
- Step 1: Write the proportion equation
664,693.97 : 917,225.88 = 392,710.28 : x - Step 2: Convert to fraction form
664,693.97/917,225.88 = 392,710.28/x - Step 3: Cross multiply
664,693.97x = 917,225.88 × 392,710.28 - Step 4: Simplify right side
664,693.97x = 360,204,029,412.75 - Step 5: Solve for x
x = 360,204,029,412.75/664,693.97 - Step 6: Final answer
x = 541,909.58
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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.