Home / 485,274,703.72-728,199,689.82-178,781,875.24

Finding the Fourth Proportional to 485,274,703.72, 728,199,689.82 and 178,781,875.24

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Solution

The fourth proportional to 485,274,703.72, 728,199,689.82 and 178,781,875.24 is: 268,278,781.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,274,703.72 : 728,199,689.82 = 178,781,875.24 : x
  2. Step 2: Convert to fraction form
    485,274,703.72/728,199,689.82 = 178,781,875.24/x
  3. Step 3: Cross multiply
    485,274,703.72x = 728,199,689.82 × 178,781,875.24
  4. Step 4: Simplify right side
    485,274,703.72x = 130,188,906,095,205,952
  5. Step 5: Solve for x
    x = 130,188,906,095,205,952/485,274,703.72
  6. Step 6: Final answer
    x = 268,278,781.27

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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.