Home / 1,387,581.03-2,081,339.13-639,627.03

Finding the Fourth Proportional to 1,387,581.03, 2,081,339.13 and 639,627.03

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Solution

The fourth proportional to 1,387,581.03, 2,081,339.13 and 639,627.03 is: 959,425.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,581.03 : 2,081,339.13 = 639,627.03 : x
  2. Step 2: Convert to fraction form
    1,387,581.03/2,081,339.13 = 639,627.03/x
  3. Step 3: Cross multiply
    1,387,581.03x = 2,081,339.13 × 639,627.03
  4. Step 4: Simplify right side
    1,387,581.03x = 1,331,280,766,144.68
  5. Step 5: Solve for x
    x = 1,331,280,766,144.68/1,387,581.03
  6. Step 6: Final answer
    x = 959,425.60

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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.