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Finding the Fourth Proportional to 527,059.80, 727,342.80 and 285,342.42

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Solution

The fourth proportional to 527,059.80, 727,342.80 and 285,342.42 is: 393,772.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,059.80 : 727,342.80 = 285,342.42 : x
  2. Step 2: Convert to fraction form
    527,059.80/727,342.80 = 285,342.42/x
  3. Step 3: Cross multiply
    527,059.80x = 727,342.80 × 285,342.42
  4. Step 4: Simplify right side
    527,059.80x = 207,541,754,721.58
  5. Step 5: Solve for x
    x = 207,541,754,721.58/527,059.80
  6. Step 6: Final answer
    x = 393,772.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.