Home / 748,375.20-1,121,331.60-432,280.80

Finding the Fourth Proportional to 748,375.20, 1,121,331.60 and 432,280.80

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Solution

The fourth proportional to 748,375.20, 1,121,331.60 and 432,280.80 is: 647,710.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,375.20 : 1,121,331.60 = 432,280.80 : x
  2. Step 2: Convert to fraction form
    748,375.20/1,121,331.60 = 432,280.80/x
  3. Step 3: Cross multiply
    748,375.20x = 1,121,331.60 × 432,280.80
  4. Step 4: Simplify right side
    748,375.20x = 484,730,121,113.28
  5. Step 5: Solve for x
    x = 484,730,121,113.28/748,375.20
  6. Step 6: Final answer
    x = 647,710.03

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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.