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Finding the Fourth Proportional to 622,445.80, 932,171.91 and 355,396.90

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Solution

The fourth proportional to 622,445.80, 932,171.91 and 355,396.90 is: 532,240.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,445.80 : 932,171.91 = 355,396.90 : x
  2. Step 2: Convert to fraction form
    622,445.80/932,171.91 = 355,396.90/x
  3. Step 3: Cross multiply
    622,445.80x = 932,171.91 × 355,396.90
  4. Step 4: Simplify right side
    622,445.80x = 331,291,007,081.08
  5. Step 5: Solve for x
    x = 331,291,007,081.08/622,445.80
  6. Step 6: Final answer
    x = 532,240.73

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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.