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Finding the Fourth Proportional to 392,696.40, 589,044.60 and 349,150.80

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Solution

The fourth proportional to 392,696.40, 589,044.60 and 349,150.80 is: 523,726.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,696.40 : 589,044.60 = 349,150.80 : x
  2. Step 2: Convert to fraction form
    392,696.40/589,044.60 = 349,150.80/x
  3. Step 3: Cross multiply
    392,696.40x = 589,044.60 × 349,150.80
  4. Step 4: Simplify right side
    392,696.40x = 205,665,393,325.68
  5. Step 5: Solve for x
    x = 205,665,393,325.68/392,696.40
  6. Step 6: Final answer
    x = 523,726.20

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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.