Home / 748,880.80-1,123,321.20-615,911.20

Finding the Fourth Proportional to 748,880.80, 1,123,321.20 and 615,911.20

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Solution

The fourth proportional to 748,880.80, 1,123,321.20 and 615,911.20 is: 923,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,880.80 : 1,123,321.20 = 615,911.20 : x
  2. Step 2: Convert to fraction form
    748,880.80/1,123,321.20 = 615,911.20/x
  3. Step 3: Cross multiply
    748,880.80x = 1,123,321.20 × 615,911.20
  4. Step 4: Simplify right side
    748,880.80x = 691,866,108,277.44
  5. Step 5: Solve for x
    x = 691,866,108,277.44/748,880.80
  6. Step 6: Final answer
    x = 923,866.80

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Double scale
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Similar ratio
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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.