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Finding the Fourth Proportional to 664,714.13, 996,862.05 and 215,330.74

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Solution

The fourth proportional to 664,714.13, 996,862.05 and 215,330.74 is: 322,928.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,714.13 : 996,862.05 = 215,330.74 : x
  2. Step 2: Convert to fraction form
    664,714.13/996,862.05 = 215,330.74/x
  3. Step 3: Cross multiply
    664,714.13x = 996,862.05 × 215,330.74
  4. Step 4: Simplify right side
    664,714.13x = 214,655,042,904.42
  5. Step 5: Solve for x
    x = 214,655,042,904.42/664,714.13
  6. Step 6: Final answer
    x = 322,928.36

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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.