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Finding the Fourth Proportional to 644,450.92, 889,356.24 and 354,066.16

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Solution

The fourth proportional to 644,450.92, 889,356.24 and 354,066.16 is: 488,618.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,450.92 : 889,356.24 = 354,066.16 : x
  2. Step 2: Convert to fraction form
    644,450.92/889,356.24 = 354,066.16/x
  3. Step 3: Cross multiply
    644,450.92x = 889,356.24 × 354,066.16
  4. Step 4: Simplify right side
    644,450.92x = 314,890,948,768.84
  5. Step 5: Solve for x
    x = 314,890,948,768.84/644,450.92
  6. Step 6: Final answer
    x = 488,618.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.