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Finding the Fourth Proportional to 890,704.60, 1,229,149.02 and 482,788.60

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Solution

The fourth proportional to 890,704.60, 1,229,149.02 and 482,788.60 is: 666,235.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,704.60 : 1,229,149.02 = 482,788.60 : x
  2. Step 2: Convert to fraction form
    890,704.60/1,229,149.02 = 482,788.60/x
  3. Step 3: Cross multiply
    890,704.60x = 1,229,149.02 × 482,788.60
  4. Step 4: Simplify right side
    890,704.60x = 593,419,134,557.17
  5. Step 5: Solve for x
    x = 593,419,134,557.17/890,704.60
  6. Step 6: Final answer
    x = 666,235.62

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.