Home / 861,498.47-1,291,448.97-381,470.60

Finding the Fourth Proportional to 861,498.47, 1,291,448.97 and 381,470.60

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Solution

The fourth proportional to 861,498.47, 1,291,448.97 and 381,470.60 is: 571,852.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,498.47 : 1,291,448.97 = 381,470.60 : x
  2. Step 2: Convert to fraction form
    861,498.47/1,291,448.97 = 381,470.60/x
  3. Step 3: Cross multiply
    861,498.47x = 1,291,448.97 × 381,470.60
  4. Step 4: Simplify right side
    861,498.47x = 492,649,806,998.04
  5. Step 5: Solve for x
    x = 492,649,806,998.04/861,498.47
  6. Step 6: Final answer
    x = 571,852.22

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Double scale
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1.5x scale

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.