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Finding the Fourth Proportional to 457,552.40, 687,115.92 and 437,869.40

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Solution

The fourth proportional to 457,552.40, 687,115.92 and 437,869.40 is: 657,557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,552.40 : 687,115.92 = 437,869.40 : x
  2. Step 2: Convert to fraction form
    457,552.40/687,115.92 = 437,869.40/x
  3. Step 3: Cross multiply
    457,552.40x = 687,115.92 × 437,869.40
  4. Step 4: Simplify right side
    457,552.40x = 300,867,035,620.85
  5. Step 5: Solve for x
    x = 300,867,035,620.85/457,552.40
  6. Step 6: Final answer
    x = 657,557.55

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1.5x scale

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.