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Finding the Fourth Proportional to 664,918.70, 998,004.45 and 349,601.90

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Solution

The fourth proportional to 664,918.70, 998,004.45 and 349,601.90 is: 524,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,918.70 : 998,004.45 = 349,601.90 : x
  2. Step 2: Convert to fraction form
    664,918.70/998,004.45 = 349,601.90/x
  3. Step 3: Cross multiply
    664,918.70x = 998,004.45 × 349,601.90
  4. Step 4: Simplify right side
    664,918.70x = 348,904,251,928.46
  5. Step 5: Solve for x
    x = 348,904,251,928.46/664,918.70
  6. Step 6: Final answer
    x = 524,732.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.