Home / 1,208,168.40-1,667,278.68-664,339.20

Finding the Fourth Proportional to 1,208,168.40, 1,667,278.68 and 664,339.20

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Solution

The fourth proportional to 1,208,168.40, 1,667,278.68 and 664,339.20 is: 916,791.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,168.40 : 1,667,278.68 = 664,339.20 : x
  2. Step 2: Convert to fraction form
    1,208,168.40/1,667,278.68 = 664,339.20/x
  3. Step 3: Cross multiply
    1,208,168.40x = 1,667,278.68 × 664,339.20
  4. Step 4: Simplify right side
    1,208,168.40x = 1,107,638,584,448.26
  5. Step 5: Solve for x
    x = 1,107,638,584,448.26/1,208,168.40
  6. Step 6: Final answer
    x = 916,791.55

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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.