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Finding the Fourth Proportional to 404,105.99, 605,241.45 and 313,420.73

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Solution

The fourth proportional to 404,105.99, 605,241.45 and 313,420.73 is: 469,419.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,105.99 : 605,241.45 = 313,420.73 : x
  2. Step 2: Convert to fraction form
    404,105.99/605,241.45 = 313,420.73/x
  3. Step 3: Cross multiply
    404,105.99x = 605,241.45 × 313,420.73
  4. Step 4: Simplify right side
    404,105.99x = 189,695,217,085.26
  5. Step 5: Solve for x
    x = 189,695,217,085.26/404,105.99
  6. Step 6: Final answer
    x = 469,419.46

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1.5x scale

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.