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Finding the Fourth Proportional to 723,353.82, 998,226.55 and 401,055.63

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Solution

The fourth proportional to 723,353.82, 998,226.55 and 401,055.63 is: 553,455.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,353.82 : 998,226.55 = 401,055.63 : x
  2. Step 2: Convert to fraction form
    723,353.82/998,226.55 = 401,055.63/x
  3. Step 3: Cross multiply
    723,353.82x = 998,226.55 × 401,055.63
  4. Step 4: Simplify right side
    723,353.82x = 400,344,377,892.98
  5. Step 5: Solve for x
    x = 400,344,377,892.98/723,353.82
  6. Step 6: Final answer
    x = 553,455.81

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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.