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Finding the Fourth Proportional to 671,691.60, 1,006,225.20 and 404,658.90

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Solution

The fourth proportional to 671,691.60, 1,006,225.20 and 404,658.90 is: 606,197.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,691.60 : 1,006,225.20 = 404,658.90 : x
  2. Step 2: Convert to fraction form
    671,691.60/1,006,225.20 = 404,658.90/x
  3. Step 3: Cross multiply
    671,691.60x = 1,006,225.20 × 404,658.90
  4. Step 4: Simplify right side
    671,691.60x = 407,177,982,584.28
  5. Step 5: Solve for x
    x = 407,177,982,584.28/671,691.60
  6. Step 6: Final answer
    x = 606,197.82

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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.