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Finding the Fourth Proportional to 819,344.68, 1,229,017 and 258,422.92

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Solution

The fourth proportional to 819,344.68, 1,229,017 and 258,422.92 is: 387,634.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,344.68 : 1,229,017 = 258,422.92 : x
  2. Step 2: Convert to fraction form
    819,344.68/1,229,017 = 258,422.92/x
  3. Step 3: Cross multiply
    819,344.68x = 1,229,017 × 258,422.92
  4. Step 4: Simplify right side
    819,344.68x = 317,606,161,869.64
  5. Step 5: Solve for x
    x = 317,606,161,869.64/819,344.68
  6. Step 6: Final answer
    x = 387,634.37

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.