Home / 485,274,820.40-727,912,230.60-322,016,145.20

Finding the Fourth Proportional to 485,274,820.40, 727,912,230.60 and 322,016,145.20

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Solution

The fourth proportional to 485,274,820.40, 727,912,230.60 and 322,016,145.20 is: 483,024,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,274,820.40 : 727,912,230.60 = 322,016,145.20 : x
  2. Step 2: Convert to fraction form
    485,274,820.40/727,912,230.60 = 322,016,145.20/x
  3. Step 3: Cross multiply
    485,274,820.40x = 727,912,230.60 × 322,016,145.20
  4. Step 4: Simplify right side
    485,274,820.40x = 234,399,490,541,745,472
  5. Step 5: Solve for x
    x = 234,399,490,541,745,472/485,274,820.40
  6. Step 6: Final answer
    x = 483,024,217.80

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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.