Home / 687,881.22-1,031,470.50-404,126.07

Finding the Fourth Proportional to 687,881.22, 1,031,470.50 and 404,126.07

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Solution

The fourth proportional to 687,881.22, 1,031,470.50 and 404,126.07 is: 605,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,881.22 : 1,031,470.50 = 404,126.07 : x
  2. Step 2: Convert to fraction form
    687,881.22/1,031,470.50 = 404,126.07/x
  3. Step 3: Cross multiply
    687,881.22x = 1,031,470.50 × 404,126.07
  4. Step 4: Simplify right side
    687,881.22x = 416,844,119,485.94
  5. Step 5: Solve for x
    x = 416,844,119,485.94/687,881.22
  6. Step 6: Final answer
    x = 605,982.70

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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.