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Finding the Fourth Proportional to 668,626.49, 922,704.49 and 378,231.85

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Solution

The fourth proportional to 668,626.49, 922,704.49 and 378,231.85 is: 521,959.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,626.49 : 922,704.49 = 378,231.85 : x
  2. Step 2: Convert to fraction form
    668,626.49/922,704.49 = 378,231.85/x
  3. Step 3: Cross multiply
    668,626.49x = 922,704.49 × 378,231.85
  4. Step 4: Simplify right side
    668,626.49x = 348,996,226,256.01
  5. Step 5: Solve for x
    x = 348,996,226,256.01/668,626.49
  6. Step 6: Final answer
    x = 521,959.92

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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.