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Finding the Fourth Proportional to 819,599.76, 1,229,104.08 and 346,321.80

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Solution

The fourth proportional to 819,599.76, 1,229,104.08 and 346,321.80 is: 519,357.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,599.76 : 1,229,104.08 = 346,321.80 : x
  2. Step 2: Convert to fraction form
    819,599.76/1,229,104.08 = 346,321.80/x
  3. Step 3: Cross multiply
    819,599.76x = 1,229,104.08 × 346,321.80
  4. Step 4: Simplify right side
    819,599.76x = 425,665,537,372.94
  5. Step 5: Solve for x
    x = 425,665,537,372.94/819,599.76
  6. Step 6: Final answer
    x = 519,357.81

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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.