Home / 852,078.60-1,278,117.90-253,132.20

Finding the Fourth Proportional to 852,078.60, 1,278,117.90 and 253,132.20

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Solution

The fourth proportional to 852,078.60, 1,278,117.90 and 253,132.20 is: 379,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,078.60 : 1,278,117.90 = 253,132.20 : x
  2. Step 2: Convert to fraction form
    852,078.60/1,278,117.90 = 253,132.20/x
  3. Step 3: Cross multiply
    852,078.60x = 1,278,117.90 × 253,132.20
  4. Step 4: Simplify right side
    852,078.60x = 323,532,795,886.38
  5. Step 5: Solve for x
    x = 323,532,795,886.38/852,078.60
  6. Step 6: Final answer
    x = 379,698.30

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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.