Home / 862,763.70-1,294,145.55-442,859.70

Finding the Fourth Proportional to 862,763.70, 1,294,145.55 and 442,859.70

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Solution

The fourth proportional to 862,763.70, 1,294,145.55 and 442,859.70 is: 664,289.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,763.70 : 1,294,145.55 = 442,859.70 : x
  2. Step 2: Convert to fraction form
    862,763.70/1,294,145.55 = 442,859.70/x
  3. Step 3: Cross multiply
    862,763.70x = 1,294,145.55 × 442,859.70
  4. Step 4: Simplify right side
    862,763.70x = 573,124,910,029.34
  5. Step 5: Solve for x
    x = 573,124,910,029.34/862,763.70
  6. Step 6: Final answer
    x = 664,289.55

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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.