Home / 781,778,357.66-1,172,666,545.97-199,512,616.12

Finding the Fourth Proportional to 781,778,357.66, 1,172,666,545.97 and 199,512,616.12

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Solution

The fourth proportional to 781,778,357.66, 1,172,666,545.97 and 199,512,616.12 is: 299,268,671.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,778,357.66 : 1,172,666,545.97 = 199,512,616.12 : x
  2. Step 2: Convert to fraction form
    781,778,357.66/1,172,666,545.97 = 199,512,616.12/x
  3. Step 3: Cross multiply
    781,778,357.66x = 1,172,666,545.97 × 199,512,616.12
  4. Step 4: Simplify right side
    781,778,357.66x = 233,961,770,418,949,696
  5. Step 5: Solve for x
    x = 233,961,770,418,949,696/781,778,357.66
  6. Step 6: Final answer
    x = 299,268,671.39

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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.