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Finding the Fourth Proportional to 723,546.90, 998,497.42 and 401,286.78

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Solution

The fourth proportional to 723,546.90, 998,497.42 and 401,286.78 is: 553,777.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,546.90 : 998,497.42 = 401,286.78 : x
  2. Step 2: Convert to fraction form
    723,546.90/998,497.42 = 401,286.78/x
  3. Step 3: Cross multiply
    723,546.90x = 998,497.42 × 401,286.78
  4. Step 4: Simplify right side
    723,546.90x = 400,683,814,510.11
  5. Step 5: Solve for x
    x = 400,683,814,510.11/723,546.90
  6. Step 6: Final answer
    x = 553,777.25

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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.