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Finding the Fourth Proportional to 723,431.52, 998,375.40 and 401,134.77

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Solution

The fourth proportional to 723,431.52, 998,375.40 and 401,134.77 is: 553,588.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,431.52 : 998,375.40 = 401,134.77 : x
  2. Step 2: Convert to fraction form
    723,431.52/998,375.40 = 401,134.77/x
  3. Step 3: Cross multiply
    723,431.52x = 998,375.40 × 401,134.77
  4. Step 4: Simplify right side
    723,431.52x = 400,483,086,452.66
  5. Step 5: Solve for x
    x = 400,483,086,452.66/723,431.52
  6. Step 6: Final answer
    x = 553,588.11

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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.