Home / 442,552,520.70-663,828,781.05-289,670,139.90

Finding the Fourth Proportional to 442,552,520.70, 663,828,781.05 and 289,670,139.90

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Solution

The fourth proportional to 442,552,520.70, 663,828,781.05 and 289,670,139.90 is: 434,505,209.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,552,520.70 : 663,828,781.05 = 289,670,139.90 : x
  2. Step 2: Convert to fraction form
    442,552,520.70/663,828,781.05 = 289,670,139.90/x
  3. Step 3: Cross multiply
    442,552,520.70x = 663,828,781.05 × 289,670,139.90
  4. Step 4: Simplify right side
    442,552,520.70x = 192,291,375,876,399,936
  5. Step 5: Solve for x
    x = 192,291,375,876,399,936/442,552,520.70
  6. Step 6: Final answer
    x = 434,505,209.85

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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.