Home / 1,258,891.20-1,888,894.89-659,709.90

Finding the Fourth Proportional to 1,258,891.20, 1,888,894.89 and 659,709.90

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Solution

The fourth proportional to 1,258,891.20, 1,888,894.89 and 659,709.90 is: 989,857.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,891.20 : 1,888,894.89 = 659,709.90 : x
  2. Step 2: Convert to fraction form
    1,258,891.20/1,888,894.89 = 659,709.90/x
  3. Step 3: Cross multiply
    1,258,891.20x = 1,888,894.89 × 659,709.90
  4. Step 4: Simplify right side
    1,258,891.20x = 1,246,122,658,992.41
  5. Step 5: Solve for x
    x = 1,246,122,658,992.41/1,258,891.20
  6. Step 6: Final answer
    x = 989,857.31

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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.