Home / 861,974.39-1,189,537.35-499,424.47

Finding the Fourth Proportional to 861,974.39, 1,189,537.35 and 499,424.47

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Solution

The fourth proportional to 861,974.39, 1,189,537.35 and 499,424.47 is: 689,213.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,974.39 : 1,189,537.35 = 499,424.47 : x
  2. Step 2: Convert to fraction form
    861,974.39/1,189,537.35 = 499,424.47/x
  3. Step 3: Cross multiply
    861,974.39x = 1,189,537.35 × 499,424.47
  4. Step 4: Simplify right side
    861,974.39x = 594,084,055,722.27
  5. Step 5: Solve for x
    x = 594,084,055,722.27/861,974.39
  6. Step 6: Final answer
    x = 689,213.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.