Home / 819,206.40-1,228,982.40-258,297.60

Finding the Fourth Proportional to 819,206.40, 1,228,982.40 and 258,297.60

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Solution

The fourth proportional to 819,206.40, 1,228,982.40 and 258,297.60 is: 387,500.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,206.40 : 1,228,982.40 = 258,297.60 : x
  2. Step 2: Convert to fraction form
    819,206.40/1,228,982.40 = 258,297.60/x
  3. Step 3: Cross multiply
    819,206.40x = 1,228,982.40 × 258,297.60
  4. Step 4: Simplify right side
    819,206.40x = 317,443,204,362.24
  5. Step 5: Solve for x
    x = 317,443,204,362.24/819,206.40
  6. Step 6: Final answer
    x = 387,500.88

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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.