Home / 687,485.19-1,031,255.73-327,470.97

Finding the Fourth Proportional to 687,485.19, 1,031,255.73 and 327,470.97

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Solution

The fourth proportional to 687,485.19, 1,031,255.73 and 327,470.97 is: 491,219.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,485.19 : 1,031,255.73 = 327,470.97 : x
  2. Step 2: Convert to fraction form
    687,485.19/1,031,255.73 = 327,470.97/x
  3. Step 3: Cross multiply
    687,485.19x = 1,031,255.73 × 327,470.97
  4. Step 4: Simplify right side
    687,485.19x = 337,706,314,221.16
  5. Step 5: Solve for x
    x = 337,706,314,221.16/687,485.19
  6. Step 6: Final answer
    x = 491,219.77

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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.