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Finding the Fourth Proportional to 550,812.20, 824,468.70 and 393,348.20

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Solution

The fourth proportional to 550,812.20, 824,468.70 and 393,348.20 is: 588,772.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,812.20 : 824,468.70 = 393,348.20 : x
  2. Step 2: Convert to fraction form
    550,812.20/824,468.70 = 393,348.20/x
  3. Step 3: Cross multiply
    550,812.20x = 824,468.70 × 393,348.20
  4. Step 4: Simplify right side
    550,812.20x = 324,303,279,101.34
  5. Step 5: Solve for x
    x = 324,303,279,101.34/550,812.20
  6. Step 6: Final answer
    x = 588,772.87

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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.