Home / 991,576.38-1,368,390.15-538,867.74

Finding the Fourth Proportional to 991,576.38, 1,368,390.15 and 538,867.74

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Solution

The fourth proportional to 991,576.38, 1,368,390.15 and 538,867.74 is: 743,645.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,576.38 : 1,368,390.15 = 538,867.74 : x
  2. Step 2: Convert to fraction form
    991,576.38/1,368,390.15 = 538,867.74/x
  3. Step 3: Cross multiply
    991,576.38x = 1,368,390.15 × 538,867.74
  4. Step 4: Simplify right side
    991,576.38x = 737,381,307,568.76
  5. Step 5: Solve for x
    x = 737,381,307,568.76/991,576.38
  6. Step 6: Final answer
    x = 743,645.49

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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.