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Finding the Fourth Proportional to 668,392.97, 922,369.68 and 377,999.46

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Solution

The fourth proportional to 668,392.97, 922,369.68 and 377,999.46 is: 521,632.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,392.97 : 922,369.68 = 377,999.46 : x
  2. Step 2: Convert to fraction form
    668,392.97/922,369.68 = 377,999.46/x
  3. Step 3: Cross multiply
    668,392.97x = 922,369.68 × 377,999.46
  4. Step 4: Simplify right side
    668,392.97x = 348,655,240,960.37
  5. Step 5: Solve for x
    x = 348,655,240,960.37/668,392.97
  6. Step 6: Final answer
    x = 521,632.12

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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.