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Finding the Fourth Proportional to 488,136.42, 732,722.20 and 432,338.76

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Solution

The fourth proportional to 488,136.42, 732,722.20 and 432,338.76 is: 648,966.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,136.42 : 732,722.20 = 432,338.76 : x
  2. Step 2: Convert to fraction form
    488,136.42/732,722.20 = 432,338.76/x
  3. Step 3: Cross multiply
    488,136.42x = 732,722.20 × 432,338.76
  4. Step 4: Simplify right side
    488,136.42x = 316,784,207,372.47
  5. Step 5: Solve for x
    x = 316,784,207,372.47/488,136.42
  6. Step 6: Final answer
    x = 648,966.55

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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.