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Finding the Fourth Proportional to 579,705.80, 869,709.90 and 224,731.40

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Solution

The fourth proportional to 579,705.80, 869,709.90 and 224,731.40 is: 337,155.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,705.80 : 869,709.90 = 224,731.40 : x
  2. Step 2: Convert to fraction form
    579,705.80/869,709.90 = 224,731.40/x
  3. Step 3: Cross multiply
    579,705.80x = 869,709.90 × 224,731.40
  4. Step 4: Simplify right side
    579,705.80x = 195,451,123,420.86
  5. Step 5: Solve for x
    x = 195,451,123,420.86/579,705.80
  6. Step 6: Final answer
    x = 337,155.71

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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.