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Finding the Fourth Proportional to 723,680.70, 998,798.94 and 401,494.60

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Solution

The fourth proportional to 723,680.70, 998,798.94 and 401,494.60 is: 554,128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,680.70 : 998,798.94 = 401,494.60 : x
  2. Step 2: Convert to fraction form
    723,680.70/998,798.94 = 401,494.60/x
  3. Step 3: Cross multiply
    723,680.70x = 998,798.94 × 401,494.60
  4. Step 4: Simplify right side
    723,680.70x = 401,012,378,398.73
  5. Step 5: Solve for x
    x = 401,012,378,398.73/723,680.70
  6. Step 6: Final answer
    x = 554,128.88

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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.