Home / 807,470.20-1,211,205.30-542,049.40

Finding the Fourth Proportional to 807,470.20, 1,211,205.30 and 542,049.40

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Solution

The fourth proportional to 807,470.20, 1,211,205.30 and 542,049.40 is: 813,074.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,470.20 : 1,211,205.30 = 542,049.40 : x
  2. Step 2: Convert to fraction form
    807,470.20/1,211,205.30 = 542,049.40/x
  3. Step 3: Cross multiply
    807,470.20x = 1,211,205.30 × 542,049.40
  4. Step 4: Simplify right side
    807,470.20x = 656,533,106,141.82
  5. Step 5: Solve for x
    x = 656,533,106,141.82/807,470.20
  6. Step 6: Final answer
    x = 813,074.10

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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.