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Finding the Fourth Proportional to 664,000.80, 994,813.20 and 403,864.80

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Solution

The fourth proportional to 664,000.80, 994,813.20 and 403,864.80 is: 605,074.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,000.80 : 994,813.20 = 403,864.80 : x
  2. Step 2: Convert to fraction form
    664,000.80/994,813.20 = 403,864.80/x
  3. Step 3: Cross multiply
    664,000.80x = 994,813.20 × 403,864.80
  4. Step 4: Simplify right side
    664,000.80x = 401,770,034,055.36
  5. Step 5: Solve for x
    x = 401,770,034,055.36/664,000.80
  6. Step 6: Final answer
    x = 605,074.62

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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.