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Finding the Fourth Proportional to 723,559, 998,511.42 and 401,318.44

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Solution

The fourth proportional to 723,559, 998,511.42 and 401,318.44 is: 553,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,559 : 998,511.42 = 401,318.44 : x
  2. Step 2: Convert to fraction form
    723,559/998,511.42 = 401,318.44/x
  3. Step 3: Cross multiply
    723,559x = 998,511.42 × 401,318.44
  4. Step 4: Simplify right side
    723,559x = 400,721,045,396.59
  5. Step 5: Solve for x
    x = 400,721,045,396.59/723,559
  6. Step 6: Final answer
    x = 553,819.45

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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.