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Finding the Fourth Proportional to 627,601.60, 940,819.20 and 438,061.60

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Solution

The fourth proportional to 627,601.60, 940,819.20 and 438,061.60 is: 656,685.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,601.60 : 940,819.20 = 438,061.60 : x
  2. Step 2: Convert to fraction form
    627,601.60/940,819.20 = 438,061.60/x
  3. Step 3: Cross multiply
    627,601.60x = 940,819.20 × 438,061.60
  4. Step 4: Simplify right side
    627,601.60x = 412,136,764,062.72
  5. Step 5: Solve for x
    x = 412,136,764,062.72/627,601.60
  6. Step 6: Final answer
    x = 656,685.33

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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.