Home / 861,739.80-1,292,609.70-787,090.20

Finding the Fourth Proportional to 861,739.80, 1,292,609.70 and 787,090.20

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Solution

The fourth proportional to 861,739.80, 1,292,609.70 and 787,090.20 is: 1,180,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,739.80 : 1,292,609.70 = 787,090.20 : x
  2. Step 2: Convert to fraction form
    861,739.80/1,292,609.70 = 787,090.20/x
  3. Step 3: Cross multiply
    861,739.80x = 1,292,609.70 × 787,090.20
  4. Step 4: Simplify right side
    861,739.80x = 1,017,400,427,294.94
  5. Step 5: Solve for x
    x = 1,017,400,427,294.94/861,739.80
  6. Step 6: Final answer
    x = 1,180,635.30

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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.