Home / 861,580.26-1,292,376.78-321,958.51

Finding the Fourth Proportional to 861,580.26, 1,292,376.78 and 321,958.51

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Solution

The fourth proportional to 861,580.26, 1,292,376.78 and 321,958.51 is: 482,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,580.26 : 1,292,376.78 = 321,958.51 : x
  2. Step 2: Convert to fraction form
    861,580.26/1,292,376.78 = 321,958.51/x
  3. Step 3: Cross multiply
    861,580.26x = 1,292,376.78 × 321,958.51
  4. Step 4: Simplify right side
    861,580.26x = 416,091,699,216.46
  5. Step 5: Solve for x
    x = 416,091,699,216.46/861,580.26
  6. Step 6: Final answer
    x = 482,940.15

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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.