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Finding the Fourth Proportional to 418,008.96, 627,990.48 and 395,351.64

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Solution

The fourth proportional to 418,008.96, 627,990.48 and 395,351.64 is: 593,951.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,008.96 : 627,990.48 = 395,351.64 : x
  2. Step 2: Convert to fraction form
    418,008.96/627,990.48 = 395,351.64/x
  3. Step 3: Cross multiply
    418,008.96x = 627,990.48 × 395,351.64
  4. Step 4: Simplify right side
    418,008.96x = 248,277,066,172.39
  5. Step 5: Solve for x
    x = 248,277,066,172.39/418,008.96
  6. Step 6: Final answer
    x = 593,951.54

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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.