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Finding the Fourth Proportional to 410,785.60, 615,141.60 and 269,780.80

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Solution

The fourth proportional to 410,785.60, 615,141.60 and 269,780.80 is: 403,990.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,785.60 : 615,141.60 = 269,780.80 : x
  2. Step 2: Convert to fraction form
    410,785.60/615,141.60 = 269,780.80/x
  3. Step 3: Cross multiply
    410,785.60x = 615,141.60 × 269,780.80
  4. Step 4: Simplify right side
    410,785.60x = 165,953,392,961.28
  5. Step 5: Solve for x
    x = 165,953,392,961.28/410,785.60
  6. Step 6: Final answer
    x = 403,990.29

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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.