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Finding the Fourth Proportional to 527,672.80, 728,145.12 and 298,249.66

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Solution

The fourth proportional to 527,672.80, 728,145.12 and 298,249.66 is: 411,560.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,672.80 : 728,145.12 = 298,249.66 : x
  2. Step 2: Convert to fraction form
    527,672.80/728,145.12 = 298,249.66/x
  3. Step 3: Cross multiply
    527,672.80x = 728,145.12 × 298,249.66
  4. Step 4: Simplify right side
    527,672.80x = 217,169,034,470.66
  5. Step 5: Solve for x
    x = 217,169,034,470.66/527,672.80
  6. Step 6: Final answer
    x = 411,560.03

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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.