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Finding the Fourth Proportional to 670,451.33, 925,219.62 and 394,969.11

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Solution

The fourth proportional to 670,451.33, 925,219.62 and 394,969.11 is: 545,055.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,451.33 : 925,219.62 = 394,969.11 : x
  2. Step 2: Convert to fraction form
    670,451.33/925,219.62 = 394,969.11/x
  3. Step 3: Cross multiply
    670,451.33x = 925,219.62 × 394,969.11
  4. Step 4: Simplify right side
    670,451.33x = 365,433,169,865.94
  5. Step 5: Solve for x
    x = 365,433,169,865.94/670,451.33
  6. Step 6: Final answer
    x = 545,055.48

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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.