Home / 527,472.78-791,198.01-128,115.42

Finding the Fourth Proportional to 527,472.78, 791,198.01 and 128,115.42

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Solution

The fourth proportional to 527,472.78, 791,198.01 and 128,115.42 is: 192,170.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,472.78 : 791,198.01 = 128,115.42 : x
  2. Step 2: Convert to fraction form
    527,472.78/791,198.01 = 128,115.42/x
  3. Step 3: Cross multiply
    527,472.78x = 791,198.01 × 128,115.42
  4. Step 4: Simplify right side
    527,472.78x = 101,364,665,354.31
  5. Step 5: Solve for x
    x = 101,364,665,354.31/527,472.78
  6. Step 6: Final answer
    x = 192,170.42

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1.5x scale

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.