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Finding the Fourth Proportional to 723,624.93, 998,663.72 and 401,438.81

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Solution

The fourth proportional to 723,624.93, 998,663.72 and 401,438.81 is: 554,019.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,624.93 : 998,663.72 = 401,438.81 : x
  2. Step 2: Convert to fraction form
    723,624.93/998,663.72 = 401,438.81/x
  3. Step 3: Cross multiply
    723,624.93x = 998,663.72 × 401,438.81
  4. Step 4: Simplify right side
    723,624.93x = 400,902,375,836.44
  5. Step 5: Solve for x
    x = 400,902,375,836.44/723,624.93
  6. Step 6: Final answer
    x = 554,019.57

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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.