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Finding the Fourth Proportional to 622,121.40, 932,490.90 and 341,839.80

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Solution

The fourth proportional to 622,121.40, 932,490.90 and 341,839.80 is: 512,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,121.40 : 932,490.90 = 341,839.80 : x
  2. Step 2: Convert to fraction form
    622,121.40/932,490.90 = 341,839.80/x
  3. Step 3: Cross multiply
    622,121.40x = 932,490.90 × 341,839.80
  4. Step 4: Simplify right side
    622,121.40x = 318,762,502,757.82
  5. Step 5: Solve for x
    x = 318,762,502,757.82/622,121.40
  6. Step 6: Final answer
    x = 512,379.90

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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.