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Finding the Fourth Proportional to 510,179.40, 765,269.10 and 478,686.60

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Solution

The fourth proportional to 510,179.40, 765,269.10 and 478,686.60 is: 718,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,179.40 : 765,269.10 = 478,686.60 : x
  2. Step 2: Convert to fraction form
    510,179.40/765,269.10 = 478,686.60/x
  3. Step 3: Cross multiply
    510,179.40x = 765,269.10 × 478,686.60
  4. Step 4: Simplify right side
    510,179.40x = 366,324,063,564.06
  5. Step 5: Solve for x
    x = 366,324,063,564.06/510,179.40
  6. Step 6: Final answer
    x = 718,029.90

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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.