Home / 861,941,610.39-1,292,912,432.51-206,892,636.51

Finding the Fourth Proportional to 861,941,610.39, 1,292,912,432.51 and 206,892,636.51

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Solution

The fourth proportional to 861,941,610.39, 1,292,912,432.51 and 206,892,636.51 is: 310,338,958.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,941,610.39 : 1,292,912,432.51 = 206,892,636.51 : x
  2. Step 2: Convert to fraction form
    861,941,610.39/1,292,912,432.51 = 206,892,636.51/x
  3. Step 3: Cross multiply
    861,941,610.39x = 1,292,912,432.51 × 206,892,636.51
  4. Step 4: Simplify right side
    861,941,610.39x = 267,494,061,938,551,328
  5. Step 5: Solve for x
    x = 267,494,061,938,551,328/861,941,610.39
  6. Step 6: Final answer
    x = 310,338,958.83

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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.