Home / 485,274,726.72-728,199,724.32-178,781,898.24

Finding the Fourth Proportional to 485,274,726.72, 728,199,724.32 and 178,781,898.24

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Solution

The fourth proportional to 485,274,726.72, 728,199,724.32 and 178,781,898.24 is: 268,278,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,274,726.72 : 728,199,724.32 = 178,781,898.24 : x
  2. Step 2: Convert to fraction form
    485,274,726.72/728,199,724.32 = 178,781,898.24/x
  3. Step 3: Cross multiply
    485,274,726.72x = 728,199,724.32 × 178,781,898.24
  4. Step 4: Simplify right side
    485,274,726.72x = 130,188,929,011,774,304
  5. Step 5: Solve for x
    x = 130,188,929,011,774,304/485,274,726.72
  6. Step 6: Final answer
    x = 268,278,815.78

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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.