Home / 861,945.30-1,189,484.46-499,579.35

Finding the Fourth Proportional to 861,945.30, 1,189,484.46 and 499,579.35

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Solution

The fourth proportional to 861,945.30, 1,189,484.46 and 499,579.35 is: 689,419.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,945.30 : 1,189,484.46 = 499,579.35 : x
  2. Step 2: Convert to fraction form
    861,945.30/1,189,484.46 = 499,579.35/x
  3. Step 3: Cross multiply
    861,945.30x = 1,189,484.46 × 499,579.35
  4. Step 4: Simplify right side
    861,945.30x = 594,241,867,414.48
  5. Step 5: Solve for x
    x = 594,241,867,414.48/861,945.30
  6. Step 6: Final answer
    x = 689,419.47

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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.