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Finding the Fourth Proportional to 668,399.10, 922,449.06 and 366,651.42

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Solution

The fourth proportional to 668,399.10, 922,449.06 and 366,651.42 is: 506,010.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,399.10 : 922,449.06 = 366,651.42 : x
  2. Step 2: Convert to fraction form
    668,399.10/922,449.06 = 366,651.42/x
  3. Step 3: Cross multiply
    668,399.10x = 922,449.06 × 366,651.42
  4. Step 4: Simplify right side
    668,399.10x = 338,217,257,726.67
  5. Step 5: Solve for x
    x = 338,217,257,726.67/668,399.10
  6. Step 6: Final answer
    x = 506,010.94

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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.