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Finding the Fourth Proportional to 409,805.60, 614,708.40 and 275,961.20

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Solution

The fourth proportional to 409,805.60, 614,708.40 and 275,961.20 is: 413,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,805.60 : 614,708.40 = 275,961.20 : x
  2. Step 2: Convert to fraction form
    409,805.60/614,708.40 = 275,961.20/x
  3. Step 3: Cross multiply
    409,805.60x = 614,708.40 × 275,961.20
  4. Step 4: Simplify right side
    409,805.60x = 169,635,667,714.08
  5. Step 5: Solve for x
    x = 169,635,667,714.08/409,805.60
  6. Step 6: Final answer
    x = 413,941.80

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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.