Home / 1,188,983.42-1,640,794.92-645,119.12

Finding the Fourth Proportional to 1,188,983.42, 1,640,794.92 and 645,119.12

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Solution

The fourth proportional to 1,188,983.42, 1,640,794.92 and 645,119.12 is: 890,263.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,983.42 : 1,640,794.92 = 645,119.12 : x
  2. Step 2: Convert to fraction form
    1,188,983.42/1,640,794.92 = 645,119.12/x
  3. Step 3: Cross multiply
    1,188,983.42x = 1,640,794.92 × 645,119.12
  4. Step 4: Simplify right side
    1,188,983.42x = 1,058,508,174,890.87
  5. Step 5: Solve for x
    x = 1,058,508,174,890.87/1,188,983.42
  6. Step 6: Final answer
    x = 890,263.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.