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Finding the Fourth Proportional to 664,954.20, 998,057.70 and 349,637.40

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Solution

The fourth proportional to 664,954.20, 998,057.70 and 349,637.40 is: 524,785.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,954.20 : 998,057.70 = 349,637.40 : x
  2. Step 2: Convert to fraction form
    664,954.20/998,057.70 = 349,637.40/x
  3. Step 3: Cross multiply
    664,954.20x = 998,057.70 × 349,637.40
  4. Step 4: Simplify right side
    664,954.20x = 348,958,299,277.98
  5. Step 5: Solve for x
    x = 348,958,299,277.98/664,954.20
  6. Step 6: Final answer
    x = 524,785.47

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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.