Home / 456,682.20-685,217.70-288,331.80

Finding the Fourth Proportional to 456,682.20, 685,217.70 and 288,331.80

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Solution

The fourth proportional to 456,682.20, 685,217.70 and 288,331.80 is: 432,620.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,682.20 : 685,217.70 = 288,331.80 : x
  2. Step 2: Convert to fraction form
    456,682.20/685,217.70 = 288,331.80/x
  3. Step 3: Cross multiply
    456,682.20x = 685,217.70 × 288,331.80
  4. Step 4: Simplify right side
    456,682.20x = 197,570,052,832.86
  5. Step 5: Solve for x
    x = 197,570,052,832.86/456,682.20
  6. Step 6: Final answer
    x = 432,620.44

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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.