Home / 1,171,494.40-1,755,235.65-639,388.81

Finding the Fourth Proportional to 1,171,494.40, 1,755,235.65 and 639,388.81

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Solution

The fourth proportional to 1,171,494.40, 1,755,235.65 and 639,388.81 is: 957,988.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,494.40 : 1,755,235.65 = 639,388.81 : x
  2. Step 2: Convert to fraction form
    1,171,494.40/1,755,235.65 = 639,388.81/x
  3. Step 3: Cross multiply
    1,171,494.40x = 1,755,235.65 × 639,388.81
  4. Step 4: Simplify right side
    1,171,494.40x = 1,122,278,033,523.08
  5. Step 5: Solve for x
    x = 1,122,278,033,523.08/1,171,494.40
  6. Step 6: Final answer
    x = 957,988.39

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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.