Home / 748,613.40-1,122,920.10-275,200.80

Finding the Fourth Proportional to 748,613.40, 1,122,920.10 and 275,200.80

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Solution

The fourth proportional to 748,613.40, 1,122,920.10 and 275,200.80 is: 412,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,613.40 : 1,122,920.10 = 275,200.80 : x
  2. Step 2: Convert to fraction form
    748,613.40/1,122,920.10 = 275,200.80/x
  3. Step 3: Cross multiply
    748,613.40x = 1,122,920.10 × 275,200.80
  4. Step 4: Simplify right side
    748,613.40x = 309,028,509,856.08
  5. Step 5: Solve for x
    x = 309,028,509,856.08/748,613.40
  6. Step 6: Final answer
    x = 412,801.20

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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.