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Finding the Fourth Proportional to 617,376.60, 926,002.26 and 418,971.96

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Solution

The fourth proportional to 617,376.60, 926,002.26 and 418,971.96 is: 628,415.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,376.60 : 926,002.26 = 418,971.96 : x
  2. Step 2: Convert to fraction form
    617,376.60/926,002.26 = 418,971.96/x
  3. Step 3: Cross multiply
    617,376.60x = 926,002.26 × 418,971.96
  4. Step 4: Simplify right side
    617,376.60x = 387,968,981,836.63
  5. Step 5: Solve for x
    x = 387,968,981,836.63/617,376.60
  6. Step 6: Final answer
    x = 628,415.43

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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.