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Finding the Fourth Proportional to 661,505.58, 992,446.80 and 324,647.44

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Solution

The fourth proportional to 661,505.58, 992,446.80 and 324,647.44 is: 487,063.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,505.58 : 992,446.80 = 324,647.44 : x
  2. Step 2: Convert to fraction form
    661,505.58/992,446.80 = 324,647.44/x
  3. Step 3: Cross multiply
    661,505.58x = 992,446.80 × 324,647.44
  4. Step 4: Simplify right side
    661,505.58x = 322,195,312,956.19
  5. Step 5: Solve for x
    x = 322,195,312,956.19/661,505.58
  6. Step 6: Final answer
    x = 487,063.64

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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.