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Finding the Fourth Proportional to 408,450.80, 611,801.40 and 329,718.80

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Solution

The fourth proportional to 408,450.80, 611,801.40 and 329,718.80 is: 493,872.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,450.80 : 611,801.40 = 329,718.80 : x
  2. Step 2: Convert to fraction form
    408,450.80/611,801.40 = 329,718.80/x
  3. Step 3: Cross multiply
    408,450.80x = 611,801.40 × 329,718.80
  4. Step 4: Simplify right side
    408,450.80x = 201,722,423,446.32
  5. Step 5: Solve for x
    x = 201,722,423,446.32/408,450.80
  6. Step 6: Final answer
    x = 493,872.02

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1.5x scale

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.