Home / 858,778.20-1,288,167.30-297,812.70

Finding the Fourth Proportional to 858,778.20, 1,288,167.30 and 297,812.70

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Solution

The fourth proportional to 858,778.20, 1,288,167.30 and 297,812.70 is: 446,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,778.20 : 1,288,167.30 = 297,812.70 : x
  2. Step 2: Convert to fraction form
    858,778.20/1,288,167.30 = 297,812.70/x
  3. Step 3: Cross multiply
    858,778.20x = 1,288,167.30 × 297,812.70
  4. Step 4: Simplify right side
    858,778.20x = 383,632,581,664.71
  5. Step 5: Solve for x
    x = 383,632,581,664.71/858,778.20
  6. Step 6: Final answer
    x = 446,719.05

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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.