Home / 459,148,520.80-688,722,781.20-423,276,253.30

Finding the Fourth Proportional to 459,148,520.80, 688,722,781.20 and 423,276,253.30

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Solution

The fourth proportional to 459,148,520.80, 688,722,781.20 and 423,276,253.30 is: 634,914,379.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,148,520.80 : 688,722,781.20 = 423,276,253.30 : x
  2. Step 2: Convert to fraction form
    459,148,520.80/688,722,781.20 = 423,276,253.30/x
  3. Step 3: Cross multiply
    459,148,520.80x = 688,722,781.20 × 423,276,253.30
  4. Step 4: Simplify right side
    459,148,520.80x = 291,519,998,388,691,712
  5. Step 5: Solve for x
    x = 291,519,998,388,691,712/459,148,520.80
  6. Step 6: Final answer
    x = 634,914,379.95

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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.