Home / 887,415.60-1,331,123.40-256,393.20

Finding the Fourth Proportional to 887,415.60, 1,331,123.40 and 256,393.20

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Solution

The fourth proportional to 887,415.60, 1,331,123.40 and 256,393.20 is: 384,589.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,415.60 : 1,331,123.40 = 256,393.20 : x
  2. Step 2: Convert to fraction form
    887,415.60/1,331,123.40 = 256,393.20/x
  3. Step 3: Cross multiply
    887,415.60x = 1,331,123.40 × 256,393.20
  4. Step 4: Simplify right side
    887,415.60x = 341,290,988,120.88
  5. Step 5: Solve for x
    x = 341,290,988,120.88/887,415.60
  6. Step 6: Final answer
    x = 384,589.80

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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.