Home / 755,129.40-1,132,694.10-419,206.20

Finding the Fourth Proportional to 755,129.40, 1,132,694.10 and 419,206.20

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Solution

The fourth proportional to 755,129.40, 1,132,694.10 and 419,206.20 is: 628,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,129.40 : 1,132,694.10 = 419,206.20 : x
  2. Step 2: Convert to fraction form
    755,129.40/1,132,694.10 = 419,206.20/x
  3. Step 3: Cross multiply
    755,129.40x = 1,132,694.10 × 419,206.20
  4. Step 4: Simplify right side
    755,129.40x = 474,832,389,423.42
  5. Step 5: Solve for x
    x = 474,832,389,423.42/755,129.40
  6. Step 6: Final answer
    x = 628,809.30

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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.