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Finding the Fourth Proportional to 1,314,964.40, 1,972,446.60 and 683,796.20

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Solution

The fourth proportional to 1,314,964.40, 1,972,446.60 and 683,796.20 is: 1,025,694.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,964.40 : 1,972,446.60 = 683,796.20 : x
  2. Step 2: Convert to fraction form
    1,314,964.40/1,972,446.60 = 683,796.20/x
  3. Step 3: Cross multiply
    1,314,964.40x = 1,972,446.60 × 683,796.20
  4. Step 4: Simplify right side
    1,314,964.40x = 1,348,751,489,782.92
  5. Step 5: Solve for x
    x = 1,348,751,489,782.92/1,314,964.40
  6. Step 6: Final answer
    x = 1,025,694.30

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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.