Home / 1,438,819.46-1,986,162.14-981,443.78

Finding the Fourth Proportional to 1,438,819.46, 1,986,162.14 and 981,443.78

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Solution

The fourth proportional to 1,438,819.46, 1,986,162.14 and 981,443.78 is: 1,354,795.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,819.46 : 1,986,162.14 = 981,443.78 : x
  2. Step 2: Convert to fraction form
    1,438,819.46/1,986,162.14 = 981,443.78/x
  3. Step 3: Cross multiply
    1,438,819.46x = 1,986,162.14 × 981,443.78
  4. Step 4: Simplify right side
    1,438,819.46x = 1,949,306,473,467.27
  5. Step 5: Solve for x
    x = 1,949,306,473,467.27/1,438,819.46
  6. Step 6: Final answer
    x = 1,354,795.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.