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Finding the Fourth Proportional to 444,080.80, 666,121.20 and 425,418.40

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Solution

The fourth proportional to 444,080.80, 666,121.20 and 425,418.40 is: 638,127.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,080.80 : 666,121.20 = 425,418.40 : x
  2. Step 2: Convert to fraction form
    444,080.80/666,121.20 = 425,418.40/x
  3. Step 3: Cross multiply
    444,080.80x = 666,121.20 × 425,418.40
  4. Step 4: Simplify right side
    444,080.80x = 283,380,215,110.08
  5. Step 5: Solve for x
    x = 283,380,215,110.08/444,080.80
  6. Step 6: Final answer
    x = 638,127.60

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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.