Home / 858,776.70-1,288,165.05-297,811.20

Finding the Fourth Proportional to 858,776.70, 1,288,165.05 and 297,811.20

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Solution

The fourth proportional to 858,776.70, 1,288,165.05 and 297,811.20 is: 446,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,776.70 : 1,288,165.05 = 297,811.20 : x
  2. Step 2: Convert to fraction form
    858,776.70/1,288,165.05 = 297,811.20/x
  3. Step 3: Cross multiply
    858,776.70x = 1,288,165.05 × 297,811.20
  4. Step 4: Simplify right side
    858,776.70x = 383,629,979,338.56
  5. Step 5: Solve for x
    x = 383,629,979,338.56/858,776.70
  6. Step 6: Final answer
    x = 446,716.80

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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.