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Finding the Fourth Proportional to 626,912.80, 940,369.20 and 332,000.80

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Solution

The fourth proportional to 626,912.80, 940,369.20 and 332,000.80 is: 498,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,912.80 : 940,369.20 = 332,000.80 : x
  2. Step 2: Convert to fraction form
    626,912.80/940,369.20 = 332,000.80/x
  3. Step 3: Cross multiply
    626,912.80x = 940,369.20 × 332,000.80
  4. Step 4: Simplify right side
    626,912.80x = 312,203,326,695.36
  5. Step 5: Solve for x
    x = 312,203,326,695.36/626,912.80
  6. Step 6: Final answer
    x = 498,001.20

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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.