Home / 455,964.80-682,910.40-288,003.20

Finding the Fourth Proportional to 455,964.80, 682,910.40 and 288,003.20

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Solution

The fourth proportional to 455,964.80, 682,910.40 and 288,003.20 is: 431,349.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,964.80 : 682,910.40 = 288,003.20 : x
  2. Step 2: Convert to fraction form
    455,964.80/682,910.40 = 288,003.20/x
  3. Step 3: Cross multiply
    455,964.80x = 682,910.40 × 288,003.20
  4. Step 4: Simplify right side
    455,964.80x = 196,680,380,513.28
  5. Step 5: Solve for x
    x = 196,680,380,513.28/455,964.80
  6. Step 6: Final answer
    x = 431,349.92

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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.