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Finding the Fourth Proportional to 978,204.30, 1,467,306.45 and 889,630.80

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Solution

The fourth proportional to 978,204.30, 1,467,306.45 and 889,630.80 is: 1,334,446.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,204.30 : 1,467,306.45 = 889,630.80 : x
  2. Step 2: Convert to fraction form
    978,204.30/1,467,306.45 = 889,630.80/x
  3. Step 3: Cross multiply
    978,204.30x = 1,467,306.45 × 889,630.80
  4. Step 4: Simplify right side
    978,204.30x = 1,305,361,010,958.66
  5. Step 5: Solve for x
    x = 1,305,361,010,958.66/978,204.30
  6. Step 6: Final answer
    x = 1,334,446.20

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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.