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Finding the Fourth Proportional to 644,559.80, 966,839.70 and 329,631.80

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Solution

The fourth proportional to 644,559.80, 966,839.70 and 329,631.80 is: 494,447.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,559.80 : 966,839.70 = 329,631.80 : x
  2. Step 2: Convert to fraction form
    644,559.80/966,839.70 = 329,631.80/x
  3. Step 3: Cross multiply
    644,559.80x = 966,839.70 × 329,631.80
  4. Step 4: Simplify right side
    644,559.80x = 318,701,110,622.46
  5. Step 5: Solve for x
    x = 318,701,110,622.46/644,559.80
  6. Step 6: Final answer
    x = 494,447.70

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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.