Home / 1,338,761.78-1,847,493.45-726,915.72

Finding the Fourth Proportional to 1,338,761.78, 1,847,493.45 and 726,915.72

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Solution

The fourth proportional to 1,338,761.78, 1,847,493.45 and 726,915.72 is: 1,003,144.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,761.78 : 1,847,493.45 = 726,915.72 : x
  2. Step 2: Convert to fraction form
    1,338,761.78/1,847,493.45 = 726,915.72/x
  3. Step 3: Cross multiply
    1,338,761.78x = 1,847,493.45 × 726,915.72
  4. Step 4: Simplify right side
    1,338,761.78x = 1,342,972,031,402.03
  5. Step 5: Solve for x
    x = 1,342,972,031,402.03/1,338,761.78
  6. Step 6: Final answer
    x = 1,003,144.89

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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.