Home / 861,941,439.15-1,292,912,175.89-206,892,465.49

Finding the Fourth Proportional to 861,941,439.15, 1,292,912,175.89 and 206,892,465.49

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Solution

The fourth proportional to 861,941,439.15, 1,292,912,175.89 and 206,892,465.49 is: 310,338,702.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,941,439.15 : 1,292,912,175.89 = 206,892,465.49 : x
  2. Step 2: Convert to fraction form
    861,941,439.15/1,292,912,175.89 = 206,892,465.49/x
  3. Step 3: Cross multiply
    861,941,439.15x = 1,292,912,175.89 × 206,892,465.49
  4. Step 4: Simplify right side
    861,941,439.15x = 267,493,787,730,888,192
  5. Step 5: Solve for x
    x = 267,493,787,730,888,192/861,941,439.15
  6. Step 6: Final answer
    x = 310,338,702.36

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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.