Home / 819,445.92-1,229,295.51-279,575.79

Finding the Fourth Proportional to 819,445.92, 1,229,295.51 and 279,575.79

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Solution

The fourth proportional to 819,445.92, 1,229,295.51 and 279,575.79 is: 419,406.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,445.92 : 1,229,295.51 = 279,575.79 : x
  2. Step 2: Convert to fraction form
    819,445.92/1,229,295.51 = 279,575.79/x
  3. Step 3: Cross multiply
    819,445.92x = 1,229,295.51 × 279,575.79
  4. Step 4: Simplify right side
    819,445.92x = 343,681,263,351.70
  5. Step 5: Solve for x
    x = 343,681,263,351.70/819,445.92
  6. Step 6: Final answer
    x = 419,406.89

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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.