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Finding the Fourth Proportional to 1,306,729.50, 1,797,687.99 and 1,250,742.30

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Solution

The fourth proportional to 1,306,729.50, 1,797,687.99 and 1,250,742.30 is: 1,720,665.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306,729.50 : 1,797,687.99 = 1,250,742.30 : x
  2. Step 2: Convert to fraction form
    1,306,729.50/1,797,687.99 = 1,250,742.30/x
  3. Step 3: Cross multiply
    1,306,729.50x = 1,797,687.99 × 1,250,742.30
  4. Step 4: Simplify right side
    1,306,729.50x = 2,248,444,411,294.98
  5. Step 5: Solve for x
    x = 2,248,444,411,294.98/1,306,729.50
  6. Step 6: Final answer
    x = 1,720,665.53

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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.