Home / 861,812.60-1,292,806.37-329,781.11

Finding the Fourth Proportional to 861,812.60, 1,292,806.37 and 329,781.11

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Solution

The fourth proportional to 861,812.60, 1,292,806.37 and 329,781.11 is: 494,705.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,812.60 : 1,292,806.37 = 329,781.11 : x
  2. Step 2: Convert to fraction form
    861,812.60/1,292,806.37 = 329,781.11/x
  3. Step 3: Cross multiply
    861,812.60x = 1,292,806.37 × 329,781.11
  4. Step 4: Simplify right side
    861,812.60x = 426,343,114,074.09
  5. Step 5: Solve for x
    x = 426,343,114,074.09/861,812.60
  6. Step 6: Final answer
    x = 494,705.13

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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.