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Finding the Fourth Proportional to 981,344.80, 1,472,017.20 and 662,480.20

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Solution

The fourth proportional to 981,344.80, 1,472,017.20 and 662,480.20 is: 993,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,344.80 : 1,472,017.20 = 662,480.20 : x
  2. Step 2: Convert to fraction form
    981,344.80/1,472,017.20 = 662,480.20/x
  3. Step 3: Cross multiply
    981,344.80x = 1,472,017.20 × 662,480.20
  4. Step 4: Simplify right side
    981,344.80x = 975,182,249,059.44
  5. Step 5: Solve for x
    x = 975,182,249,059.44/981,344.80
  6. Step 6: Final answer
    x = 993,720.30

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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.