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Finding the Fourth Proportional to 627,431.60, 940,801.80 and 206,490.80

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Solution

The fourth proportional to 627,431.60, 940,801.80 and 206,490.80 is: 309,622.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,431.60 : 940,801.80 = 206,490.80 : x
  2. Step 2: Convert to fraction form
    627,431.60/940,801.80 = 206,490.80/x
  3. Step 3: Cross multiply
    627,431.60x = 940,801.80 × 206,490.80
  4. Step 4: Simplify right side
    627,431.60x = 194,266,916,323.44
  5. Step 5: Solve for x
    x = 194,266,916,323.44/627,431.60
  6. Step 6: Final answer
    x = 309,622.46

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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.