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Finding the Fourth Proportional to 667,559.80, 1,001,339.70 and 489,100.60

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Solution

The fourth proportional to 667,559.80, 1,001,339.70 and 489,100.60 is: 733,650.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,559.80 : 1,001,339.70 = 489,100.60 : x
  2. Step 2: Convert to fraction form
    667,559.80/1,001,339.70 = 489,100.60/x
  3. Step 3: Cross multiply
    667,559.80x = 1,001,339.70 × 489,100.60
  4. Step 4: Simplify right side
    667,559.80x = 489,755,848,073.82
  5. Step 5: Solve for x
    x = 489,755,848,073.82/667,559.80
  6. Step 6: Final answer
    x = 733,650.90

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Double scale
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Similar ratio
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1.5x scale

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.