Home / 861,209.79-1,292,001.38-262,155.29

Finding the Fourth Proportional to 861,209.79, 1,292,001.38 and 262,155.29

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Solution

The fourth proportional to 861,209.79, 1,292,001.38 and 262,155.29 is: 393,289.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,209.79 : 1,292,001.38 = 262,155.29 : x
  2. Step 2: Convert to fraction form
    861,209.79/1,292,001.38 = 262,155.29/x
  3. Step 3: Cross multiply
    861,209.79x = 1,292,001.38 × 262,155.29
  4. Step 4: Simplify right side
    861,209.79x = 338,704,988,683.52
  5. Step 5: Solve for x
    x = 338,704,988,683.52/861,209.79
  6. Step 6: Final answer
    x = 393,289.76

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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.