Home / 861,941,560.20-1,292,912,357.40-206,892,586.38

Finding the Fourth Proportional to 861,941,560.20, 1,292,912,357.40 and 206,892,586.38

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Solution

The fourth proportional to 861,941,560.20, 1,292,912,357.40 and 206,892,586.38 is: 310,338,883.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,941,560.20 : 1,292,912,357.40 = 206,892,586.38 : x
  2. Step 2: Convert to fraction form
    861,941,560.20/1,292,912,357.40 = 206,892,586.38/x
  3. Step 3: Cross multiply
    861,941,560.20x = 1,292,912,357.40 × 206,892,586.38
  4. Step 4: Simplify right side
    861,941,560.20x = 267,493,981,585,148,960
  5. Step 5: Solve for x
    x = 267,493,981,585,148,960/861,941,560.20
  6. Step 6: Final answer
    x = 310,338,883.67

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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.