Home / 440,097,988.20-660,146,982.30-394,181,485.80

Finding the Fourth Proportional to 440,097,988.20, 660,146,982.30 and 394,181,485.80

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Solution

The fourth proportional to 440,097,988.20, 660,146,982.30 and 394,181,485.80 is: 591,272,228.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,097,988.20 : 660,146,982.30 = 394,181,485.80 : x
  2. Step 2: Convert to fraction form
    440,097,988.20/660,146,982.30 = 394,181,485.80/x
  3. Step 3: Cross multiply
    440,097,988.20x = 660,146,982.30 × 394,181,485.80
  4. Step 4: Simplify right side
    440,097,988.20x = 260,217,718,329,400,288
  5. Step 5: Solve for x
    x = 260,217,718,329,400,288/440,097,988.20
  6. Step 6: Final answer
    x = 591,272,228.70

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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.