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Finding the Fourth Proportional to 527,825.72, 791,727.48 and 128,468.72

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Solution

The fourth proportional to 527,825.72, 791,727.48 and 128,468.72 is: 192,700.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,825.72 : 791,727.48 = 128,468.72 : x
  2. Step 2: Convert to fraction form
    527,825.72/791,727.48 = 128,468.72/x
  3. Step 3: Cross multiply
    527,825.72x = 791,727.48 × 128,468.72
  4. Step 4: Simplify right side
    527,825.72x = 101,712,211,985.79
  5. Step 5: Solve for x
    x = 101,712,211,985.79/527,825.72
  6. Step 6: Final answer
    x = 192,700.37

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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.