Home / 991,621.38-1,368,398.97-538,902.66

Finding the Fourth Proportional to 991,621.38, 1,368,398.97 and 538,902.66

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Solution

The fourth proportional to 991,621.38, 1,368,398.97 and 538,902.66 is: 743,664.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,621.38 : 1,368,398.97 = 538,902.66 : x
  2. Step 2: Convert to fraction form
    991,621.38/1,368,398.97 = 538,902.66/x
  3. Step 3: Cross multiply
    991,621.38x = 1,368,398.97 × 538,902.66
  4. Step 4: Simplify right side
    991,621.38x = 737,433,844,874.26
  5. Step 5: Solve for x
    x = 737,433,844,874.26/991,621.38
  6. Step 6: Final answer
    x = 743,664.73

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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.