Home / 819,310.56-1,228,964.88-258,345

Finding the Fourth Proportional to 819,310.56, 1,228,964.88 and 258,345

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Solution

The fourth proportional to 819,310.56, 1,228,964.88 and 258,345 is: 387,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,310.56 : 1,228,964.88 = 258,345 : x
  2. Step 2: Convert to fraction form
    819,310.56/1,228,964.88 = 258,345/x
  3. Step 3: Cross multiply
    819,310.56x = 1,228,964.88 × 258,345
  4. Step 4: Simplify right side
    819,310.56x = 317,496,931,923.60
  5. Step 5: Solve for x
    x = 317,496,931,923.60/819,310.56
  6. Step 6: Final answer
    x = 387,517.20

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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.