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Finding the Fourth Proportional to 478,432.30, 717,648.45 and 402,324.70

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Solution

The fourth proportional to 478,432.30, 717,648.45 and 402,324.70 is: 603,487.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,432.30 : 717,648.45 = 402,324.70 : x
  2. Step 2: Convert to fraction form
    478,432.30/717,648.45 = 402,324.70/x
  3. Step 3: Cross multiply
    478,432.30x = 717,648.45 × 402,324.70
  4. Step 4: Simplify right side
    478,432.30x = 288,727,697,351.72
  5. Step 5: Solve for x
    x = 288,727,697,351.72/478,432.30
  6. Step 6: Final answer
    x = 603,487.05

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Similar ratio
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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.