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Finding the Fourth Proportional to 629,870.40, 947,138.40 and 527,227.20

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Solution

The fourth proportional to 629,870.40, 947,138.40 and 527,227.20 is: 792,793.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,870.40 : 947,138.40 = 527,227.20 : x
  2. Step 2: Convert to fraction form
    629,870.40/947,138.40 = 527,227.20/x
  3. Step 3: Cross multiply
    629,870.40x = 947,138.40 × 527,227.20
  4. Step 4: Simplify right side
    629,870.40x = 499,357,126,644.48
  5. Step 5: Solve for x
    x = 499,357,126,644.48/629,870.40
  6. Step 6: Final answer
    x = 792,793.45

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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.