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Finding the Fourth Proportional to 418,968.68, 624,968.28 and 378,611.24

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Solution

The fourth proportional to 418,968.68, 624,968.28 and 378,611.24 is: 564,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,968.68 : 624,968.28 = 378,611.24 : x
  2. Step 2: Convert to fraction form
    418,968.68/624,968.28 = 378,611.24/x
  3. Step 3: Cross multiply
    418,968.68x = 624,968.28 × 378,611.24
  4. Step 4: Simplify right side
    418,968.68x = 236,620,012,326.63
  5. Step 5: Solve for x
    x = 236,620,012,326.63/418,968.68
  6. Step 6: Final answer
    x = 564,767.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.