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Finding the Fourth Proportional to 627,766.40, 940,420.80 and 377,705.60

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Solution

The fourth proportional to 627,766.40, 940,420.80 and 377,705.60 is: 565,819.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,766.40 : 940,420.80 = 377,705.60 : x
  2. Step 2: Convert to fraction form
    627,766.40/940,420.80 = 377,705.60/x
  3. Step 3: Cross multiply
    627,766.40x = 940,420.80 × 377,705.60
  4. Step 4: Simplify right side
    627,766.40x = 355,202,202,516.48
  5. Step 5: Solve for x
    x = 355,202,202,516.48/627,766.40
  6. Step 6: Final answer
    x = 565,819.07

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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.