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Finding the Fourth Proportional to 819,394.40, 1,230,013.20 and 633,231.20

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Solution

The fourth proportional to 819,394.40, 1,230,013.20 and 633,231.20 is: 950,559.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,394.40 : 1,230,013.20 = 633,231.20 : x
  2. Step 2: Convert to fraction form
    819,394.40/1,230,013.20 = 633,231.20/x
  3. Step 3: Cross multiply
    819,394.40x = 1,230,013.20 × 633,231.20
  4. Step 4: Simplify right side
    819,394.40x = 778,882,734,651.84
  5. Step 5: Solve for x
    x = 778,882,734,651.84/819,394.40
  6. Step 6: Final answer
    x = 950,559.02

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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.