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Finding the Fourth Proportional to 688,229.92, 949,893.23 and 439,712.90

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Solution

The fourth proportional to 688,229.92, 949,893.23 and 439,712.90 is: 606,890.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,229.92 : 949,893.23 = 439,712.90 : x
  2. Step 2: Convert to fraction form
    688,229.92/949,893.23 = 439,712.90/x
  3. Step 3: Cross multiply
    688,229.92x = 949,893.23 × 439,712.90
  4. Step 4: Simplify right side
    688,229.92x = 417,680,309,635.35
  5. Step 5: Solve for x
    x = 417,680,309,635.35/688,229.92
  6. Step 6: Final answer
    x = 606,890.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.