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Finding the Fourth Proportional to 426,363.82, 639,320.87 and 377,800.13

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Solution

The fourth proportional to 426,363.82, 639,320.87 and 377,800.13 is: 566,500.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,363.82 : 639,320.87 = 377,800.13 : x
  2. Step 2: Convert to fraction form
    426,363.82/639,320.87 = 377,800.13/x
  3. Step 3: Cross multiply
    426,363.82x = 639,320.87 × 377,800.13
  4. Step 4: Simplify right side
    426,363.82x = 241,535,510,340.52
  5. Step 5: Solve for x
    x = 241,535,510,340.52/426,363.82
  6. Step 6: Final answer
    x = 566,500.96

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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.