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Finding the Fourth Proportional to 1,266,949.28, 1,748,418.16 and 723,074.24

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Solution

The fourth proportional to 1,266,949.28, 1,748,418.16 and 723,074.24 is: 997,858.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,949.28 : 1,748,418.16 = 723,074.24 : x
  2. Step 2: Convert to fraction form
    1,266,949.28/1,748,418.16 = 723,074.24/x
  3. Step 3: Cross multiply
    1,266,949.28x = 1,748,418.16 × 723,074.24
  4. Step 4: Simplify right side
    1,266,949.28x = 1,264,236,132,244.20
  5. Step 5: Solve for x
    x = 1,264,236,132,244.20/1,266,949.28
  6. Step 6: Final answer
    x = 997,858.52

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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.