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Finding the Fourth Proportional to 490,248.90, 734,389.20 and 330,816.60

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Solution

The fourth proportional to 490,248.90, 734,389.20 and 330,816.60 is: 495,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,248.90 : 734,389.20 = 330,816.60 : x
  2. Step 2: Convert to fraction form
    490,248.90/734,389.20 = 330,816.60/x
  3. Step 3: Cross multiply
    490,248.90x = 734,389.20 × 330,816.60
  4. Step 4: Simplify right side
    490,248.90x = 242,948,138,220.72
  5. Step 5: Solve for x
    x = 242,948,138,220.72/490,248.90
  6. Step 6: Final answer
    x = 495,560.80

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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.