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Finding the Fourth Proportional to 629,712.60, 944,568.90 and 405,763.80

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Solution

The fourth proportional to 629,712.60, 944,568.90 and 405,763.80 is: 608,645.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,712.60 : 944,568.90 = 405,763.80 : x
  2. Step 2: Convert to fraction form
    629,712.60/944,568.90 = 405,763.80/x
  3. Step 3: Cross multiply
    629,712.60x = 944,568.90 × 405,763.80
  4. Step 4: Simplify right side
    629,712.60x = 383,271,866,225.82
  5. Step 5: Solve for x
    x = 383,271,866,225.82/629,712.60
  6. Step 6: Final answer
    x = 608,645.70

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Similar ratio
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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.