Home / 858,797.20-1,288,195.80-438,893.20

Finding the Fourth Proportional to 858,797.20, 1,288,195.80 and 438,893.20

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Solution

The fourth proportional to 858,797.20, 1,288,195.80 and 438,893.20 is: 658,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,797.20 : 1,288,195.80 = 438,893.20 : x
  2. Step 2: Convert to fraction form
    858,797.20/1,288,195.80 = 438,893.20/x
  3. Step 3: Cross multiply
    858,797.20x = 1,288,195.80 × 438,893.20
  4. Step 4: Simplify right side
    858,797.20x = 565,380,376,888.56
  5. Step 5: Solve for x
    x = 565,380,376,888.56/858,797.20
  6. Step 6: Final answer
    x = 658,339.80

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Double scale
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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.