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Finding the Fourth Proportional to 438,640.72, 656,463.96 and 367,643.48

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Solution

The fourth proportional to 438,640.72, 656,463.96 and 367,643.48 is: 550,210.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,640.72 : 656,463.96 = 367,643.48 : x
  2. Step 2: Convert to fraction form
    438,640.72/656,463.96 = 367,643.48/x
  3. Step 3: Cross multiply
    438,640.72x = 656,463.96 × 367,643.48
  4. Step 4: Simplify right side
    438,640.72x = 241,344,691,466.66
  5. Step 5: Solve for x
    x = 241,344,691,466.66/438,640.72
  6. Step 6: Final answer
    x = 550,210.42

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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.