Home / 813,949,944.12-1,221,469,165.80-347,720,324.76

Finding the Fourth Proportional to 813,949,944.12, 1,221,469,165.80 and 347,720,324.76

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Solution

The fourth proportional to 813,949,944.12, 1,221,469,165.80 and 347,720,324.76 is: 521,812,991.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,949,944.12 : 1,221,469,165.80 = 347,720,324.76 : x
  2. Step 2: Convert to fraction form
    813,949,944.12/1,221,469,165.80 = 347,720,324.76/x
  3. Step 3: Cross multiply
    813,949,944.12x = 1,221,469,165.80 × 347,720,324.76
  4. Step 4: Simplify right side
    813,949,944.12x = 424,729,655,016,302,272
  5. Step 5: Solve for x
    x = 424,729,655,016,302,272/813,949,944.12
  6. Step 6: Final answer
    x = 521,812,991.19

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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.