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Finding the Fourth Proportional to 716,940.82, 988,825.71 and 445,169.62

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Solution

The fourth proportional to 716,940.82, 988,825.71 and 445,169.62 is: 613,990.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,940.82 : 988,825.71 = 445,169.62 : x
  2. Step 2: Convert to fraction form
    716,940.82/988,825.71 = 445,169.62/x
  3. Step 3: Cross multiply
    716,940.82x = 988,825.71 × 445,169.62
  4. Step 4: Simplify right side
    716,940.82x = 440,195,165,566.93
  5. Step 5: Solve for x
    x = 440,195,165,566.93/716,940.82
  6. Step 6: Final answer
    x = 613,990.94

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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.