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Finding the Fourth Proportional to 488,447.70, 732,671.55 and 399,801.30

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Solution

The fourth proportional to 488,447.70, 732,671.55 and 399,801.30 is: 599,701.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,447.70 : 732,671.55 = 399,801.30 : x
  2. Step 2: Convert to fraction form
    488,447.70/732,671.55 = 399,801.30/x
  3. Step 3: Cross multiply
    488,447.70x = 732,671.55 × 399,801.30
  4. Step 4: Simplify right side
    488,447.70x = 292,923,038,163.02
  5. Step 5: Solve for x
    x = 292,923,038,163.02/488,447.70
  6. Step 6: Final answer
    x = 599,701.95

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Double scale
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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.