Home / 726,380,160-1,002,428,816.64-396,373,407.36

Finding the Fourth Proportional to 726,380,160, 1,002,428,816.64 and 396,373,407.36

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Solution

The fourth proportional to 726,380,160, 1,002,428,816.64 and 396,373,407.36 is: 547,008,505.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,380,160 : 1,002,428,816.64 = 396,373,407.36 : x
  2. Step 2: Convert to fraction form
    726,380,160/1,002,428,816.64 = 396,373,407.36/x
  3. Step 3: Cross multiply
    726,380,160x = 1,002,428,816.64 × 396,373,407.36
  4. Step 4: Simplify right side
    726,380,160x = 397,336,125,687,449,472
  5. Step 5: Solve for x
    x = 397,336,125,687,449,472/726,380,160
  6. Step 6: Final answer
    x = 547,008,505.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.