Home / 801,676.20-1,202,514.30-428,428.20

Finding the Fourth Proportional to 801,676.20, 1,202,514.30 and 428,428.20

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Solution

The fourth proportional to 801,676.20, 1,202,514.30 and 428,428.20 is: 642,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,676.20 : 1,202,514.30 = 428,428.20 : x
  2. Step 2: Convert to fraction form
    801,676.20/1,202,514.30 = 428,428.20/x
  3. Step 3: Cross multiply
    801,676.20x = 1,202,514.30 × 428,428.20
  4. Step 4: Simplify right side
    801,676.20x = 515,191,037,023.26
  5. Step 5: Solve for x
    x = 515,191,037,023.26/801,676.20
  6. Step 6: Final answer
    x = 642,642.30

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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.