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Finding the Fourth Proportional to 541,129.20, 811,693.80 and 429,154.80

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Solution

The fourth proportional to 541,129.20, 811,693.80 and 429,154.80 is: 643,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,129.20 : 811,693.80 = 429,154.80 : x
  2. Step 2: Convert to fraction form
    541,129.20/811,693.80 = 429,154.80/x
  3. Step 3: Cross multiply
    541,129.20x = 811,693.80 × 429,154.80
  4. Step 4: Simplify right side
    541,129.20x = 348,342,290,400.24
  5. Step 5: Solve for x
    x = 348,342,290,400.24/541,129.20
  6. Step 6: Final answer
    x = 643,732.20

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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.