Home / 440,097,989.70-660,146,984.55-394,181,487.30

Finding the Fourth Proportional to 440,097,989.70, 660,146,984.55 and 394,181,487.30

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Solution

The fourth proportional to 440,097,989.70, 660,146,984.55 and 394,181,487.30 is: 591,272,230.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,097,989.70 : 660,146,984.55 = 394,181,487.30 : x
  2. Step 2: Convert to fraction form
    440,097,989.70/660,146,984.55 = 394,181,487.30/x
  3. Step 3: Cross multiply
    440,097,989.70x = 660,146,984.55 × 394,181,487.30
  4. Step 4: Simplify right side
    440,097,989.70x = 260,217,720,206,529,120
  5. Step 5: Solve for x
    x = 260,217,720,206,529,120/440,097,989.70
  6. Step 6: Final answer
    x = 591,272,230.95

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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.