Home / 908,711.70-1,363,067.55-820,138.20

Finding the Fourth Proportional to 908,711.70, 1,363,067.55 and 820,138.20

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Solution

The fourth proportional to 908,711.70, 1,363,067.55 and 820,138.20 is: 1,230,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,711.70 : 1,363,067.55 = 820,138.20 : x
  2. Step 2: Convert to fraction form
    908,711.70/1,363,067.55 = 820,138.20/x
  3. Step 3: Cross multiply
    908,711.70x = 1,363,067.55 × 820,138.20
  4. Step 4: Simplify right side
    908,711.70x = 1,117,903,766,935.41
  5. Step 5: Solve for x
    x = 1,117,903,766,935.41/908,711.70
  6. Step 6: Final answer
    x = 1,230,207.30

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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.