Home / 1,231,244.82-1,699,146.43-772,378.72

Finding the Fourth Proportional to 1,231,244.82, 1,699,146.43 and 772,378.72

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Solution

The fourth proportional to 1,231,244.82, 1,699,146.43 and 772,378.72 is: 1,065,900.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,244.82 : 1,699,146.43 = 772,378.72 : x
  2. Step 2: Convert to fraction form
    1,231,244.82/1,699,146.43 = 772,378.72/x
  3. Step 3: Cross multiply
    1,231,244.82x = 1,699,146.43 × 772,378.72
  4. Step 4: Simplify right side
    1,231,244.82x = 1,312,384,538,517.16
  5. Step 5: Solve for x
    x = 1,312,384,538,517.16/1,231,244.82
  6. Step 6: Final answer
    x = 1,065,900.56

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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.