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Finding the Fourth Proportional to 527,689.60, 792,052.80 and 261,750.40

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Solution

The fourth proportional to 527,689.60, 792,052.80 and 261,750.40 is: 392,882.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,689.60 : 792,052.80 = 261,750.40 : x
  2. Step 2: Convert to fraction form
    527,689.60/792,052.80 = 261,750.40/x
  3. Step 3: Cross multiply
    527,689.60x = 792,052.80 × 261,750.40
  4. Step 4: Simplify right side
    527,689.60x = 207,320,137,221.12
  5. Step 5: Solve for x
    x = 207,320,137,221.12/527,689.60
  6. Step 6: Final answer
    x = 392,882.74

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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.