Home / 1,285,508.74-1,928,282.16-486,575.78

Finding the Fourth Proportional to 1,285,508.74, 1,928,282.16 and 486,575.78

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Solution

The fourth proportional to 1,285,508.74, 1,928,282.16 and 486,575.78 is: 729,870.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,508.74 : 1,928,282.16 = 486,575.78 : x
  2. Step 2: Convert to fraction form
    1,285,508.74/1,928,282.16 = 486,575.78/x
  3. Step 3: Cross multiply
    1,285,508.74x = 1,928,282.16 × 486,575.78
  4. Step 4: Simplify right side
    1,285,508.74x = 938,255,396,062.09
  5. Step 5: Solve for x
    x = 938,255,396,062.09/1,285,508.74
  6. Step 6: Final answer
    x = 729,870.88

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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.