Home / 861,712.11-1,188,982.46-499,114.34

Finding the Fourth Proportional to 861,712.11, 1,188,982.46 and 499,114.34

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Solution

The fourth proportional to 861,712.11, 1,188,982.46 and 499,114.34 is: 688,673.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,712.11 : 1,188,982.46 = 499,114.34 : x
  2. Step 2: Convert to fraction form
    861,712.11/1,188,982.46 = 499,114.34/x
  3. Step 3: Cross multiply
    861,712.11x = 1,188,982.46 × 499,114.34
  4. Step 4: Simplify right side
    861,712.11x = 593,438,195,794.48
  5. Step 5: Solve for x
    x = 593,438,195,794.48/861,712.11
  6. Step 6: Final answer
    x = 688,673.39

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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.