Home / 3,988,264.45-5,981,141.87-1,291,964.09

Finding the Fourth Proportional to 3,988,264.45, 5,981,141.87 and 1,291,964.09

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Solution

The fourth proportional to 3,988,264.45, 5,981,141.87 and 1,291,964.09 is: 1,937,539.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988,264.45 : 5,981,141.87 = 1,291,964.09 : x
  2. Step 2: Convert to fraction form
    3,988,264.45/5,981,141.87 = 1,291,964.09/x
  3. Step 3: Cross multiply
    3,988,264.45x = 5,981,141.87 × 1,291,964.09
  4. Step 4: Simplify right side
    3,988,264.45x = 7,727,420,513,235.45
  5. Step 5: Solve for x
    x = 7,727,420,513,235.45/3,988,264.45
  6. Step 6: Final answer
    x = 1,937,539.65

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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.