Home / 858,754.20-1,288,131.30-297,788.70

Finding the Fourth Proportional to 858,754.20, 1,288,131.30 and 297,788.70

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Solution

The fourth proportional to 858,754.20, 1,288,131.30 and 297,788.70 is: 446,683.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,754.20 : 1,288,131.30 = 297,788.70 : x
  2. Step 2: Convert to fraction form
    858,754.20/1,288,131.30 = 297,788.70/x
  3. Step 3: Cross multiply
    858,754.20x = 1,288,131.30 × 297,788.70
  4. Step 4: Simplify right side
    858,754.20x = 383,590,945,256.31
  5. Step 5: Solve for x
    x = 383,590,945,256.31/858,754.20
  6. Step 6: Final answer
    x = 446,683.05

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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.