Home / 825,819.70-1,238,729.55-264,910.90

Finding the Fourth Proportional to 825,819.70, 1,238,729.55 and 264,910.90

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Solution

The fourth proportional to 825,819.70, 1,238,729.55 and 264,910.90 is: 397,366.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,819.70 : 1,238,729.55 = 264,910.90 : x
  2. Step 2: Convert to fraction form
    825,819.70/1,238,729.55 = 264,910.90/x
  3. Step 3: Cross multiply
    825,819.70x = 1,238,729.55 × 264,910.90
  4. Step 4: Simplify right side
    825,819.70x = 328,152,959,947.10
  5. Step 5: Solve for x
    x = 328,152,959,947.10/825,819.70
  6. Step 6: Final answer
    x = 397,366.35

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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.