Home / 801,674.20-1,202,511.30-428,426.20

Finding the Fourth Proportional to 801,674.20, 1,202,511.30 and 428,426.20

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Solution

The fourth proportional to 801,674.20, 1,202,511.30 and 428,426.20 is: 642,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,674.20 : 1,202,511.30 = 428,426.20 : x
  2. Step 2: Convert to fraction form
    801,674.20/1,202,511.30 = 428,426.20/x
  3. Step 3: Cross multiply
    801,674.20x = 1,202,511.30 × 428,426.20
  4. Step 4: Simplify right side
    801,674.20x = 515,187,346,716.06
  5. Step 5: Solve for x
    x = 515,187,346,716.06/801,674.20
  6. Step 6: Final answer
    x = 642,639.30

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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.