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Finding the Fourth Proportional to 717,699.39, 990,568.59 and 411,982.44

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Solution

The fourth proportional to 717,699.39, 990,568.59 and 411,982.44 is: 568,618.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,699.39 : 990,568.59 = 411,982.44 : x
  2. Step 2: Convert to fraction form
    717,699.39/990,568.59 = 411,982.44/x
  3. Step 3: Cross multiply
    717,699.39x = 990,568.59 × 411,982.44
  4. Step 4: Simplify right side
    717,699.39x = 408,096,864,695.56
  5. Step 5: Solve for x
    x = 408,096,864,695.56/717,699.39
  6. Step 6: Final answer
    x = 568,618.10

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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.