Home / 991,425.73-1,368,176.16-538,716.73

Finding the Fourth Proportional to 991,425.73, 1,368,176.16 and 538,716.73

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Solution

The fourth proportional to 991,425.73, 1,368,176.16 and 538,716.73 is: 743,433.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,425.73 : 1,368,176.16 = 538,716.73 : x
  2. Step 2: Convert to fraction form
    991,425.73/1,368,176.16 = 538,716.73/x
  3. Step 3: Cross multiply
    991,425.73x = 1,368,176.16 × 538,716.73
  4. Step 4: Simplify right side
    991,425.73x = 737,059,386,979.16
  5. Step 5: Solve for x
    x = 737,059,386,979.16/991,425.73
  6. Step 6: Final answer
    x = 743,433.79

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1.5x scale

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.