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Finding the Fourth Proportional to 408,440.80, 613,244.40 and 319,794.40

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Solution

The fourth proportional to 408,440.80, 613,244.40 and 319,794.40 is: 480,148.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,440.80 : 613,244.40 = 319,794.40 : x
  2. Step 2: Convert to fraction form
    408,440.80/613,244.40 = 319,794.40/x
  3. Step 3: Cross multiply
    408,440.80x = 613,244.40 × 319,794.40
  4. Step 4: Simplify right side
    408,440.80x = 196,112,124,951.36
  5. Step 5: Solve for x
    x = 196,112,124,951.36/408,440.80
  6. Step 6: Final answer
    x = 480,148.22

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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.