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Finding the Fourth Proportional to 485,635,954.80, 728,453,932.20 and 340,233,697.20

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Solution

The fourth proportional to 485,635,954.80, 728,453,932.20 and 340,233,697.20 is: 510,350,545.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,635,954.80 : 728,453,932.20 = 340,233,697.20 : x
  2. Step 2: Convert to fraction form
    485,635,954.80/728,453,932.20 = 340,233,697.20/x
  3. Step 3: Cross multiply
    485,635,954.80x = 728,453,932.20 × 340,233,697.20
  4. Step 4: Simplify right side
    485,635,954.80x = 247,844,574,592,284,128
  5. Step 5: Solve for x
    x = 247,844,574,592,284,128/485,635,954.80
  6. Step 6: Final answer
    x = 510,350,545.80

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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.