Home / 440,641.17-659,936.52-428,519.34

Finding the Fourth Proportional to 440,641.17, 659,936.52 and 428,519.34

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Solution

The fourth proportional to 440,641.17, 659,936.52 and 428,519.34 is: 641,781.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,641.17 : 659,936.52 = 428,519.34 : x
  2. Step 2: Convert to fraction form
    440,641.17/659,936.52 = 428,519.34/x
  3. Step 3: Cross multiply
    440,641.17x = 659,936.52 × 428,519.34
  4. Step 4: Simplify right side
    440,641.17x = 282,795,561,992.30
  5. Step 5: Solve for x
    x = 282,795,561,992.30/440,641.17
  6. Step 6: Final answer
    x = 641,781.98

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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.