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Finding the Fourth Proportional to 664,017.80, 994,838.70 and 403,881.80

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Solution

The fourth proportional to 664,017.80, 994,838.70 and 403,881.80 is: 605,100.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,017.80 : 994,838.70 = 403,881.80 : x
  2. Step 2: Convert to fraction form
    664,017.80/994,838.70 = 403,881.80/x
  3. Step 3: Cross multiply
    664,017.80x = 994,838.70 × 403,881.80
  4. Step 4: Simplify right side
    664,017.80x = 401,797,244,865.66
  5. Step 5: Solve for x
    x = 401,797,244,865.66/664,017.80
  6. Step 6: Final answer
    x = 605,100.11

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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.