Home / 1,307,234.20-1,960,851.30-420,770.20

Finding the Fourth Proportional to 1,307,234.20, 1,960,851.30 and 420,770.20

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Solution

The fourth proportional to 1,307,234.20, 1,960,851.30 and 420,770.20 is: 631,155.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307,234.20 : 1,960,851.30 = 420,770.20 : x
  2. Step 2: Convert to fraction form
    1,307,234.20/1,960,851.30 = 420,770.20/x
  3. Step 3: Cross multiply
    1,307,234.20x = 1,960,851.30 × 420,770.20
  4. Step 4: Simplify right side
    1,307,234.20x = 825,067,793,671.26
  5. Step 5: Solve for x
    x = 825,067,793,671.26/1,307,234.20
  6. Step 6: Final answer
    x = 631,155.30

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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.