Home / 861,038.74-1,291,505.59-321,190.75

Finding the Fourth Proportional to 861,038.74, 1,291,505.59 and 321,190.75

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Solution

The fourth proportional to 861,038.74, 1,291,505.59 and 321,190.75 is: 481,766.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,038.74 : 1,291,505.59 = 321,190.75 : x
  2. Step 2: Convert to fraction form
    861,038.74/1,291,505.59 = 321,190.75/x
  3. Step 3: Cross multiply
    861,038.74x = 1,291,505.59 × 321,190.75
  4. Step 4: Simplify right side
    861,038.74x = 414,819,649,081.29
  5. Step 5: Solve for x
    x = 414,819,649,081.29/861,038.74
  6. Step 6: Final answer
    x = 481,766.53

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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.