Home / 485,399,117.70-728,098,676.55-140,364,000.90

Finding the Fourth Proportional to 485,399,117.70, 728,098,676.55 and 140,364,000.90

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Solution

The fourth proportional to 485,399,117.70, 728,098,676.55 and 140,364,000.90 is: 210,546,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,399,117.70 : 728,098,676.55 = 140,364,000.90 : x
  2. Step 2: Convert to fraction form
    485,399,117.70/728,098,676.55 = 140,364,000.90/x
  3. Step 3: Cross multiply
    485,399,117.70x = 728,098,676.55 × 140,364,000.90
  4. Step 4: Simplify right side
    485,399,117.70x = 102,198,843,290,553,008
  5. Step 5: Solve for x
    x = 102,198,843,290,553,008/485,399,117.70
  6. Step 6: Final answer
    x = 210,546,001.35

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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.