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Finding the Fourth Proportional to 578,052.70, 868,115.85 and 559,390.30

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Solution

The fourth proportional to 578,052.70, 868,115.85 and 559,390.30 is: 840,088.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,052.70 : 868,115.85 = 559,390.30 : x
  2. Step 2: Convert to fraction form
    578,052.70/868,115.85 = 559,390.30/x
  3. Step 3: Cross multiply
    578,052.70x = 868,115.85 × 559,390.30
  4. Step 4: Simplify right side
    578,052.70x = 485,615,585,766.26
  5. Step 5: Solve for x
    x = 485,615,585,766.26/578,052.70
  6. Step 6: Final answer
    x = 840,088.78

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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.