Home / 1,288,791.78-1,778,532.75-715,885.26

Finding the Fourth Proportional to 1,288,791.78, 1,778,532.75 and 715,885.26

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Solution

The fourth proportional to 1,288,791.78, 1,778,532.75 and 715,885.26 is: 987,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,791.78 : 1,778,532.75 = 715,885.26 : x
  2. Step 2: Convert to fraction form
    1,288,791.78/1,778,532.75 = 715,885.26/x
  3. Step 3: Cross multiply
    1,288,791.78x = 1,778,532.75 × 715,885.26
  4. Step 4: Simplify right side
    1,288,791.78x = 1,273,225,380,152.27
  5. Step 5: Solve for x
    x = 1,273,225,380,152.27/1,288,791.78
  6. Step 6: Final answer
    x = 987,921.71

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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.