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Finding the Fourth Proportional to 707,500.61, 976,244.67 and 397,391.30

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Solution

The fourth proportional to 707,500.61, 976,244.67 and 397,391.30 is: 548,340.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,500.61 : 976,244.67 = 397,391.30 : x
  2. Step 2: Convert to fraction form
    707,500.61/976,244.67 = 397,391.30/x
  3. Step 3: Cross multiply
    707,500.61x = 976,244.67 × 397,391.30
  4. Step 4: Simplify right side
    707,500.61x = 387,951,133,648.15
  5. Step 5: Solve for x
    x = 387,951,133,648.15/707,500.61
  6. Step 6: Final answer
    x = 548,340.36

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Similar ratio
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1.5x scale

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.