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Finding the Fourth Proportional to 485,719.90, 728,579.85 and 344,002.30

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Solution

The fourth proportional to 485,719.90, 728,579.85 and 344,002.30 is: 516,003.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,719.90 : 728,579.85 = 344,002.30 : x
  2. Step 2: Convert to fraction form
    485,719.90/728,579.85 = 344,002.30/x
  3. Step 3: Cross multiply
    485,719.90x = 728,579.85 × 344,002.30
  4. Step 4: Simplify right side
    485,719.90x = 250,633,144,133.66
  5. Step 5: Solve for x
    x = 250,633,144,133.66/485,719.90
  6. Step 6: Final answer
    x = 516,003.45

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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.