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Finding the Fourth Proportional to 723,606, 998,588.76 and 401,330.16

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Solution

The fourth proportional to 723,606, 998,588.76 and 401,330.16 is: 553,842.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,606 : 998,588.76 = 401,330.16 : x
  2. Step 2: Convert to fraction form
    723,606/998,588.76 = 401,330.16/x
  3. Step 3: Cross multiply
    723,606x = 998,588.76 × 401,330.16
  4. Step 4: Simplify right side
    723,606x = 400,763,786,825.00
  5. Step 5: Solve for x
    x = 400,763,786,825.00/723,606
  6. Step 6: Final answer
    x = 553,842.54

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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.