Home / 1,297,257.30-1,940,637.15-1,139,793.30

Finding the Fourth Proportional to 1,297,257.30, 1,940,637.15 and 1,139,793.30

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Solution

The fourth proportional to 1,297,257.30, 1,940,637.15 and 1,139,793.30 is: 1,705,078.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,257.30 : 1,940,637.15 = 1,139,793.30 : x
  2. Step 2: Convert to fraction form
    1,297,257.30/1,940,637.15 = 1,139,793.30/x
  3. Step 3: Cross multiply
    1,297,257.30x = 1,940,637.15 × 1,139,793.30
  4. Step 4: Simplify right side
    1,297,257.30x = 2,211,925,221,301.10
  5. Step 5: Solve for x
    x = 2,211,925,221,301.10/1,297,257.30
  6. Step 6: Final answer
    x = 1,705,078.26

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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.