Home / 1,188,632.64-1,640,305.98-644,769.48

Finding the Fourth Proportional to 1,188,632.64, 1,640,305.98 and 644,769.48

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Solution

The fourth proportional to 1,188,632.64, 1,640,305.98 and 644,769.48 is: 889,778.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,632.64 : 1,640,305.98 = 644,769.48 : x
  2. Step 2: Convert to fraction form
    1,188,632.64/1,640,305.98 = 644,769.48/x
  3. Step 3: Cross multiply
    1,188,632.64x = 1,640,305.98 × 644,769.48
  4. Step 4: Simplify right side
    1,188,632.64x = 1,057,619,233,765.49
  5. Step 5: Solve for x
    x = 1,057,619,233,765.49/1,188,632.64
  6. Step 6: Final answer
    x = 889,778.05

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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.