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Finding the Fourth Proportional to 527,825.70, 791,727.48 and 128,468.70

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Solution

The fourth proportional to 527,825.70, 791,727.48 and 128,468.70 is: 192,700.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,825.70 : 791,727.48 = 128,468.70 : x
  2. Step 2: Convert to fraction form
    527,825.70/791,727.48 = 128,468.70/x
  3. Step 3: Cross multiply
    527,825.70x = 791,727.48 × 128,468.70
  4. Step 4: Simplify right side
    527,825.70x = 101,712,200,109.88
  5. Step 5: Solve for x
    x = 101,712,200,109.88/527,825.70
  6. Step 6: Final answer
    x = 192,700.36

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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.