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Finding the Fourth Proportional to 627,942.80, 941,914.20 and 376,000.40

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Solution

The fourth proportional to 627,942.80, 941,914.20 and 376,000.40 is: 564,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,942.80 : 941,914.20 = 376,000.40 : x
  2. Step 2: Convert to fraction form
    627,942.80/941,914.20 = 376,000.40/x
  3. Step 3: Cross multiply
    627,942.80x = 941,914.20 × 376,000.40
  4. Step 4: Simplify right side
    627,942.80x = 354,160,115,965.68
  5. Step 5: Solve for x
    x = 354,160,115,965.68/627,942.80
  6. Step 6: Final answer
    x = 564,000.60

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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.