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Finding the Fourth Proportional to 472,539.80, 708,809.70 and 398,728.55

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Solution

The fourth proportional to 472,539.80, 708,809.70 and 398,728.55 is: 598,092.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,539.80 : 708,809.70 = 398,728.55 : x
  2. Step 2: Convert to fraction form
    472,539.80/708,809.70 = 398,728.55/x
  3. Step 3: Cross multiply
    472,539.80x = 708,809.70 × 398,728.55
  4. Step 4: Simplify right side
    472,539.80x = 282,622,663,906.94
  5. Step 5: Solve for x
    x = 282,622,663,906.94/472,539.80
  6. Step 6: Final answer
    x = 598,092.83

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.