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Finding the Fourth Proportional to 668,861, 922,726.74 and 396,940.34

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Solution

The fourth proportional to 668,861, 922,726.74 and 396,940.34 is: 547,598.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,861 : 922,726.74 = 396,940.34 : x
  2. Step 2: Convert to fraction form
    668,861/922,726.74 = 396,940.34/x
  3. Step 3: Cross multiply
    668,861x = 922,726.74 × 396,940.34
  4. Step 4: Simplify right side
    668,861x = 366,267,465,902.69
  5. Step 5: Solve for x
    x = 366,267,465,902.69/668,861
  6. Step 6: Final answer
    x = 547,598.78

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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.