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Finding the Fourth Proportional to 418,575.57, 627,863.34 and 123,087.57

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Solution

The fourth proportional to 418,575.57, 627,863.34 and 123,087.57 is: 184,631.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,575.57 : 627,863.34 = 123,087.57 : x
  2. Step 2: Convert to fraction form
    418,575.57/627,863.34 = 123,087.57/x
  3. Step 3: Cross multiply
    418,575.57x = 627,863.34 × 123,087.57
  4. Step 4: Simplify right side
    418,575.57x = 77,282,172,812.68
  5. Step 5: Solve for x
    x = 77,282,172,812.68/418,575.57
  6. Step 6: Final answer
    x = 184,631.35

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Similar ratio
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1.5x scale

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.