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Finding the Fourth Proportional to 668,564.52, 922,604.16 and 378,137.64

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Solution

The fourth proportional to 668,564.52, 922,604.16 and 378,137.64 is: 521,821.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,564.52 : 922,604.16 = 378,137.64 : x
  2. Step 2: Convert to fraction form
    668,564.52/922,604.16 = 378,137.64/x
  3. Step 3: Cross multiply
    668,564.52x = 922,604.16 × 378,137.64
  4. Step 4: Simplify right side
    668,564.52x = 348,871,359,716.58
  5. Step 5: Solve for x
    x = 348,871,359,716.58/668,564.52
  6. Step 6: Final answer
    x = 521,821.53

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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.