Home / 687,672.60-1,029,176.10-603,691.80

Finding the Fourth Proportional to 687,672.60, 1,029,176.10 and 603,691.80

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Solution

The fourth proportional to 687,672.60, 1,029,176.10 and 603,691.80 is: 903,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,672.60 : 1,029,176.10 = 603,691.80 : x
  2. Step 2: Convert to fraction form
    687,672.60/1,029,176.10 = 603,691.80/x
  3. Step 3: Cross multiply
    687,672.60x = 1,029,176.10 × 603,691.80
  4. Step 4: Simplify right side
    687,672.60x = 621,305,172,325.98
  5. Step 5: Solve for x
    x = 621,305,172,325.98/687,672.60
  6. Step 6: Final answer
    x = 903,489.79

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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.