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Finding the Fourth Proportional to 617,144.52, 925,656.84 and 418,739.88

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Solution

The fourth proportional to 617,144.52, 925,656.84 and 418,739.88 is: 628,069.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,144.52 : 925,656.84 = 418,739.88 : x
  2. Step 2: Convert to fraction form
    617,144.52/925,656.84 = 418,739.88/x
  3. Step 3: Cross multiply
    617,144.52x = 925,656.84 × 418,739.88
  4. Step 4: Simplify right side
    617,144.52x = 387,609,434,102.78
  5. Step 5: Solve for x
    x = 387,609,434,102.78/617,144.52
  6. Step 6: Final answer
    x = 628,069.15

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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.