Home / 418,638.13-627,910.50-115,055.56

Finding the Fourth Proportional to 418,638.13, 627,910.50 and 115,055.56

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Solution

The fourth proportional to 418,638.13, 627,910.50 and 115,055.56 is: 172,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,638.13 : 627,910.50 = 115,055.56 : x
  2. Step 2: Convert to fraction form
    418,638.13/627,910.50 = 115,055.56/x
  3. Step 3: Cross multiply
    418,638.13x = 627,910.50 × 115,055.56
  4. Step 4: Simplify right side
    418,638.13x = 72,244,594,207.38
  5. Step 5: Solve for x
    x = 72,244,594,207.38/418,638.13
  6. Step 6: Final answer
    x = 172,570.51

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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.