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Finding the Fourth Proportional to 550,408.20, 825,612.30 and 495,295.80

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Solution

The fourth proportional to 550,408.20, 825,612.30 and 495,295.80 is: 742,943.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,408.20 : 825,612.30 = 495,295.80 : x
  2. Step 2: Convert to fraction form
    550,408.20/825,612.30 = 495,295.80/x
  3. Step 3: Cross multiply
    550,408.20x = 825,612.30 × 495,295.80
  4. Step 4: Simplify right side
    550,408.20x = 408,922,304,618.34
  5. Step 5: Solve for x
    x = 408,922,304,618.34/550,408.20
  6. Step 6: Final answer
    x = 742,943.70

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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.