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Finding the Fourth Proportional to 610,425.70, 915,638.55 and 545,107.30

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Solution

The fourth proportional to 610,425.70, 915,638.55 and 545,107.30 is: 817,660.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,425.70 : 915,638.55 = 545,107.30 : x
  2. Step 2: Convert to fraction form
    610,425.70/915,638.55 = 545,107.30/x
  3. Step 3: Cross multiply
    610,425.70x = 915,638.55 × 545,107.30
  4. Step 4: Simplify right side
    610,425.70x = 499,121,257,766.42
  5. Step 5: Solve for x
    x = 499,121,257,766.42/610,425.70
  6. Step 6: Final answer
    x = 817,660.95

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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.