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Finding the Fourth Proportional to 439,710.57, 605,971.27 and 352,396.50

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Solution

The fourth proportional to 439,710.57, 605,971.27 and 352,396.50 is: 485,642.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,710.57 : 605,971.27 = 352,396.50 : x
  2. Step 2: Convert to fraction form
    439,710.57/605,971.27 = 352,396.50/x
  3. Step 3: Cross multiply
    439,710.57x = 605,971.27 × 352,396.50
  4. Step 4: Simplify right side
    439,710.57x = 213,542,152,816.66
  5. Step 5: Solve for x
    x = 213,542,152,816.66/439,710.57
  6. Step 6: Final answer
    x = 485,642.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.