Home / 861,941,490.49-1,292,912,252.88-206,892,516.79

Finding the Fourth Proportional to 861,941,490.49, 1,292,912,252.88 and 206,892,516.79

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Solution

The fourth proportional to 861,941,490.49, 1,292,912,252.88 and 206,892,516.79 is: 310,338,779.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,941,490.49 : 1,292,912,252.88 = 206,892,516.79 : x
  2. Step 2: Convert to fraction form
    861,941,490.49/1,292,912,252.88 = 206,892,516.79/x
  3. Step 3: Cross multiply
    861,941,490.49x = 1,292,912,252.88 × 206,892,516.79
  4. Step 4: Simplify right side
    861,941,490.49x = 267,493,869,986,972,128
  5. Step 5: Solve for x
    x = 267,493,869,986,972,128/861,941,490.49
  6. Step 6: Final answer
    x = 310,338,779.30

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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.