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Finding the Fourth Proportional to 643,562.20, 965,343.30 and 494,554.60

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Solution

The fourth proportional to 643,562.20, 965,343.30 and 494,554.60 is: 741,831.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,562.20 : 965,343.30 = 494,554.60 : x
  2. Step 2: Convert to fraction form
    643,562.20/965,343.30 = 494,554.60/x
  3. Step 3: Cross multiply
    643,562.20x = 965,343.30 × 494,554.60
  4. Step 4: Simplify right side
    643,562.20x = 477,414,969,594.18
  5. Step 5: Solve for x
    x = 477,414,969,594.18/643,562.20
  6. Step 6: Final answer
    x = 741,831.90

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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.