Home / 852,070.10-1,278,105.15-253,123.70

Finding the Fourth Proportional to 852,070.10, 1,278,105.15 and 253,123.70

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Solution

The fourth proportional to 852,070.10, 1,278,105.15 and 253,123.70 is: 379,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,070.10 : 1,278,105.15 = 253,123.70 : x
  2. Step 2: Convert to fraction form
    852,070.10/1,278,105.15 = 253,123.70/x
  3. Step 3: Cross multiply
    852,070.10x = 1,278,105.15 × 253,123.70
  4. Step 4: Simplify right side
    852,070.10x = 323,518,704,557.06
  5. Step 5: Solve for x
    x = 323,518,704,557.06/852,070.10
  6. Step 6: Final answer
    x = 379,685.55

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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.