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Finding the Fourth Proportional to 510,172.20, 765,258.30 and 451,123.20

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Solution

The fourth proportional to 510,172.20, 765,258.30 and 451,123.20 is: 676,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,172.20 : 765,258.30 = 451,123.20 : x
  2. Step 2: Convert to fraction form
    510,172.20/765,258.30 = 451,123.20/x
  3. Step 3: Cross multiply
    510,172.20x = 765,258.30 × 451,123.20
  4. Step 4: Simplify right side
    510,172.20x = 345,225,773,122.56
  5. Step 5: Solve for x
    x = 345,225,773,122.56/510,172.20
  6. Step 6: Final answer
    x = 676,684.80

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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.