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Finding the Fourth Proportional to 629,781.40, 944,672.10 and 346,346.20

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Solution

The fourth proportional to 629,781.40, 944,672.10 and 346,346.20 is: 519,519.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,781.40 : 944,672.10 = 346,346.20 : x
  2. Step 2: Convert to fraction form
    629,781.40/944,672.10 = 346,346.20/x
  3. Step 3: Cross multiply
    629,781.40x = 944,672.10 × 346,346.20
  4. Step 4: Simplify right side
    629,781.40x = 327,183,592,081.02
  5. Step 5: Solve for x
    x = 327,183,592,081.02/629,781.40
  6. Step 6: Final answer
    x = 519,519.30

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Double scale
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Similar ratio
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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.