Home / 852,086.10-1,278,129.15-253,139.70

Finding the Fourth Proportional to 852,086.10, 1,278,129.15 and 253,139.70

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Solution

The fourth proportional to 852,086.10, 1,278,129.15 and 253,139.70 is: 379,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,086.10 : 1,278,129.15 = 253,139.70 : x
  2. Step 2: Convert to fraction form
    852,086.10/1,278,129.15 = 253,139.70/x
  3. Step 3: Cross multiply
    852,086.10x = 1,278,129.15 × 253,139.70
  4. Step 4: Simplify right side
    852,086.10x = 323,545,229,592.26
  5. Step 5: Solve for x
    x = 323,545,229,592.26/852,086.10
  6. Step 6: Final answer
    x = 379,709.55

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Half scale
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Double scale
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Similar ratio
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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.