Home / 1,386,123.20-2,079,183.46-521,719.52

Finding the Fourth Proportional to 1,386,123.20, 2,079,183.46 and 521,719.52

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Solution

The fourth proportional to 1,386,123.20, 2,079,183.46 and 521,719.52 is: 782,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,123.20 : 2,079,183.46 = 521,719.52 : x
  2. Step 2: Convert to fraction form
    1,386,123.20/2,079,183.46 = 521,719.52/x
  3. Step 3: Cross multiply
    1,386,123.20x = 2,079,183.46 × 521,719.52
  4. Step 4: Simplify right side
    1,386,123.20x = 1,084,750,596,743.14
  5. Step 5: Solve for x
    x = 1,084,750,596,743.14/1,386,123.20
  6. Step 6: Final answer
    x = 782,578.78

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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.