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Finding the Fourth Proportional to 626,518.40, 940,069.20 and 327,336.80

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Solution

The fourth proportional to 626,518.40, 940,069.20 and 327,336.80 is: 491,157.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,518.40 : 940,069.20 = 327,336.80 : x
  2. Step 2: Convert to fraction form
    626,518.40/940,069.20 = 327,336.80/x
  3. Step 3: Cross multiply
    626,518.40x = 940,069.20 × 327,336.80
  4. Step 4: Simplify right side
    626,518.40x = 307,719,243,706.56
  5. Step 5: Solve for x
    x = 307,719,243,706.56/626,518.40
  6. Step 6: Final answer
    x = 491,157.55

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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.