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Finding the Fourth Proportional to 723,665.54, 998,777.99 and 401,479.44

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Solution

The fourth proportional to 723,665.54, 998,777.99 and 401,479.44 is: 554,107.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,665.54 : 998,777.99 = 401,479.44 : x
  2. Step 2: Convert to fraction form
    723,665.54/998,777.99 = 401,479.44/x
  3. Step 3: Cross multiply
    723,665.54x = 998,777.99 × 401,479.44
  4. Step 4: Simplify right side
    723,665.54x = 400,988,825,367.81
  5. Step 5: Solve for x
    x = 400,988,825,367.81/723,665.54
  6. Step 6: Final answer
    x = 554,107.94

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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.