Home / 991,620.38-1,368,397.59-538,901.66

Finding the Fourth Proportional to 991,620.38, 1,368,397.59 and 538,901.66

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Solution

The fourth proportional to 991,620.38, 1,368,397.59 and 538,901.66 is: 743,663.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,620.38 : 1,368,397.59 = 538,901.66 : x
  2. Step 2: Convert to fraction form
    991,620.38/1,368,397.59 = 538,901.66/x
  3. Step 3: Cross multiply
    991,620.38x = 1,368,397.59 × 538,901.66
  4. Step 4: Simplify right side
    991,620.38x = 737,431,732,791.00
  5. Step 5: Solve for x
    x = 737,431,732,791.00/991,620.38
  6. Step 6: Final answer
    x = 743,663.35

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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.