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Finding the Fourth Proportional to 418,589.76, 627,884.62 and 123,101.76

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Solution

The fourth proportional to 418,589.76, 627,884.62 and 123,101.76 is: 184,652.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,589.76 : 627,884.62 = 123,101.76 : x
  2. Step 2: Convert to fraction form
    418,589.76/627,884.62 = 123,101.76/x
  3. Step 3: Cross multiply
    418,589.76x = 627,884.62 × 123,101.76
  4. Step 4: Simplify right side
    418,589.76x = 77,293,701,798.93
  5. Step 5: Solve for x
    x = 77,293,701,798.93/418,589.76
  6. Step 6: Final answer
    x = 184,652.63

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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.