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Finding the Fourth Proportional to 488,385.60, 732,578.40 and 299,428.80

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Solution

The fourth proportional to 488,385.60, 732,578.40 and 299,428.80 is: 449,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,385.60 : 732,578.40 = 299,428.80 : x
  2. Step 2: Convert to fraction form
    488,385.60/732,578.40 = 299,428.80/x
  3. Step 3: Cross multiply
    488,385.60x = 732,578.40 × 299,428.80
  4. Step 4: Simplify right side
    488,385.60x = 219,355,071,217.92
  5. Step 5: Solve for x
    x = 219,355,071,217.92/488,385.60
  6. Step 6: Final answer
    x = 449,143.20

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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.