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Finding the Fourth Proportional to 1,225,899.32, 1,691,974.06 and 767,227.10

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Solution

The fourth proportional to 1,225,899.32, 1,691,974.06 and 767,227.10 is: 1,058,919.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,899.32 : 1,691,974.06 = 767,227.10 : x
  2. Step 2: Convert to fraction form
    1,225,899.32/1,691,974.06 = 767,227.10/x
  3. Step 3: Cross multiply
    1,225,899.32x = 1,691,974.06 × 767,227.10
  4. Step 4: Simplify right side
    1,225,899.32x = 1,298,128,351,329.03
  5. Step 5: Solve for x
    x = 1,298,128,351,329.03/1,225,899.32
  6. Step 6: Final answer
    x = 1,058,919.22

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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.