Home / 456,076.80-683,078.40-288,115.20

Finding the Fourth Proportional to 456,076.80, 683,078.40 and 288,115.20

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Solution

The fourth proportional to 456,076.80, 683,078.40 and 288,115.20 is: 431,517.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,076.80 : 683,078.40 = 288,115.20 : x
  2. Step 2: Convert to fraction form
    456,076.80/683,078.40 = 288,115.20/x
  3. Step 3: Cross multiply
    456,076.80x = 683,078.40 × 288,115.20
  4. Step 4: Simplify right side
    456,076.80x = 196,805,269,831.68
  5. Step 5: Solve for x
    x = 196,805,269,831.68/456,076.80
  6. Step 6: Final answer
    x = 431,517.83

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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.