Home / 852,074.60-1,278,111.90-253,128.20

Finding the Fourth Proportional to 852,074.60, 1,278,111.90 and 253,128.20

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Solution

The fourth proportional to 852,074.60, 1,278,111.90 and 253,128.20 is: 379,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,074.60 : 1,278,111.90 = 253,128.20 : x
  2. Step 2: Convert to fraction form
    852,074.60/1,278,111.90 = 253,128.20/x
  3. Step 3: Cross multiply
    852,074.60x = 1,278,111.90 × 253,128.20
  4. Step 4: Simplify right side
    852,074.60x = 323,526,164,645.58
  5. Step 5: Solve for x
    x = 323,526,164,645.58/852,074.60
  6. Step 6: Final answer
    x = 379,692.30

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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.