Home / 726,480.76-1,089,710.19-326,839.31

Finding the Fourth Proportional to 726,480.76, 1,089,710.19 and 326,839.31

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Solution

The fourth proportional to 726,480.76, 1,089,710.19 and 326,839.31 is: 490,254.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,480.76 : 1,089,710.19 = 326,839.31 : x
  2. Step 2: Convert to fraction form
    726,480.76/1,089,710.19 = 326,839.31/x
  3. Step 3: Cross multiply
    726,480.76x = 1,089,710.19 × 326,839.31
  4. Step 4: Simplify right side
    726,480.76x = 356,160,126,599.57
  5. Step 5: Solve for x
    x = 356,160,126,599.57/726,480.76
  6. Step 6: Final answer
    x = 490,254.04

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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.