Home / 440,097,983.20-660,146,974.80-394,181,480.80

Finding the Fourth Proportional to 440,097,983.20, 660,146,974.80 and 394,181,480.80

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Solution

The fourth proportional to 440,097,983.20, 660,146,974.80 and 394,181,480.80 is: 591,272,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,097,983.20 : 660,146,974.80 = 394,181,480.80 : x
  2. Step 2: Convert to fraction form
    440,097,983.20/660,146,974.80 = 394,181,480.80/x
  3. Step 3: Cross multiply
    440,097,983.20x = 660,146,974.80 × 394,181,480.80
  4. Step 4: Simplify right side
    440,097,983.20x = 260,217,712,072,304,288
  5. Step 5: Solve for x
    x = 260,217,712,072,304,288/440,097,983.20
  6. Step 6: Final answer
    x = 591,272,221.20

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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.