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Finding the Fourth Proportional to 410,128.80, 615,193.20 and 404,599.20

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Solution

The fourth proportional to 410,128.80, 615,193.20 and 404,599.20 is: 606,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,128.80 : 615,193.20 = 404,599.20 : x
  2. Step 2: Convert to fraction form
    410,128.80/615,193.20 = 404,599.20/x
  3. Step 3: Cross multiply
    410,128.80x = 615,193.20 × 404,599.20
  4. Step 4: Simplify right side
    410,128.80x = 248,906,676,565.44
  5. Step 5: Solve for x
    x = 248,906,676,565.44/410,128.80
  6. Step 6: Final answer
    x = 606,898.80

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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.