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Finding the Fourth Proportional to 662,338.80, 992,827.80 and 324,860.40

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Solution

The fourth proportional to 662,338.80, 992,827.80 and 324,860.40 is: 486,956.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,338.80 : 992,827.80 = 324,860.40 : x
  2. Step 2: Convert to fraction form
    662,338.80/992,827.80 = 324,860.40/x
  3. Step 3: Cross multiply
    662,338.80x = 992,827.80 × 324,860.40
  4. Step 4: Simplify right side
    662,338.80x = 322,530,436,239.12
  5. Step 5: Solve for x
    x = 322,530,436,239.12/662,338.80
  6. Step 6: Final answer
    x = 486,956.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.