Home / 1,386,355.78-2,079,517.20-439,734.70

Finding the Fourth Proportional to 1,386,355.78, 2,079,517.20 and 439,734.70

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Solution

The fourth proportional to 1,386,355.78, 2,079,517.20 and 439,734.70 is: 659,596.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,355.78 : 2,079,517.20 = 439,734.70 : x
  2. Step 2: Convert to fraction form
    1,386,355.78/2,079,517.20 = 439,734.70/x
  3. Step 3: Cross multiply
    1,386,355.78x = 2,079,517.20 × 439,734.70
  4. Step 4: Simplify right side
    1,386,355.78x = 914,435,872,086.84
  5. Step 5: Solve for x
    x = 914,435,872,086.84/1,386,355.78
  6. Step 6: Final answer
    x = 659,596.83

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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.