Home / 867,949.20-1,301,340.60-394,390.80

Finding the Fourth Proportional to 867,949.20, 1,301,340.60 and 394,390.80

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Solution

The fourth proportional to 867,949.20, 1,301,340.60 and 394,390.80 is: 591,321.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,949.20 : 1,301,340.60 = 394,390.80 : x
  2. Step 2: Convert to fraction form
    867,949.20/1,301,340.60 = 394,390.80/x
  3. Step 3: Cross multiply
    867,949.20x = 1,301,340.60 × 394,390.80
  4. Step 4: Simplify right side
    867,949.20x = 513,236,760,306.48
  5. Step 5: Solve for x
    x = 513,236,760,306.48/867,949.20
  6. Step 6: Final answer
    x = 591,321.20

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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.