Home / 809,489.60-1,214,234.40-508,995.80

Finding the Fourth Proportional to 809,489.60, 1,214,234.40 and 508,995.80

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Solution

The fourth proportional to 809,489.60, 1,214,234.40 and 508,995.80 is: 763,493.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,489.60 : 1,214,234.40 = 508,995.80 : x
  2. Step 2: Convert to fraction form
    809,489.60/1,214,234.40 = 508,995.80/x
  3. Step 3: Cross multiply
    809,489.60x = 1,214,234.40 × 508,995.80
  4. Step 4: Simplify right side
    809,489.60x = 618,040,209,815.52
  5. Step 5: Solve for x
    x = 618,040,209,815.52/809,489.60
  6. Step 6: Final answer
    x = 763,493.70

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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.