Home / 3,986,781.60-5,981,047.20-1,291,231.20

Finding the Fourth Proportional to 3,986,781.60, 5,981,047.20 and 1,291,231.20

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Solution

The fourth proportional to 3,986,781.60, 5,981,047.20 and 1,291,231.20 is: 1,937,130.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,781.60 : 5,981,047.20 = 1,291,231.20 : x
  2. Step 2: Convert to fraction form
    3,986,781.60/5,981,047.20 = 1,291,231.20/x
  3. Step 3: Cross multiply
    3,986,781.60x = 5,981,047.20 × 1,291,231.20
  4. Step 4: Simplify right side
    3,986,781.60x = 7,722,914,753,312.64
  5. Step 5: Solve for x
    x = 7,722,914,753,312.64/3,986,781.60
  6. Step 6: Final answer
    x = 1,937,130.13

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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.