Home / 861,243.72-1,188,507.78-479,263.92

Finding the Fourth Proportional to 861,243.72, 1,188,507.78 and 479,263.92

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Solution

The fourth proportional to 861,243.72, 1,188,507.78 and 479,263.92 is: 661,379.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,243.72 : 1,188,507.78 = 479,263.92 : x
  2. Step 2: Convert to fraction form
    861,243.72/1,188,507.78 = 479,263.92/x
  3. Step 3: Cross multiply
    861,243.72x = 1,188,507.78 × 479,263.92
  4. Step 4: Simplify right side
    861,243.72x = 569,608,897,593.30
  5. Step 5: Solve for x
    x = 569,608,897,593.30/861,243.72
  6. Step 6: Final answer
    x = 661,379.45

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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.