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Finding the Fourth Proportional to 495,561.80, 743,342.70 and 408,081.80

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Solution

The fourth proportional to 495,561.80, 743,342.70 and 408,081.80 is: 612,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,561.80 : 743,342.70 = 408,081.80 : x
  2. Step 2: Convert to fraction form
    495,561.80/743,342.70 = 408,081.80/x
  3. Step 3: Cross multiply
    495,561.80x = 743,342.70 × 408,081.80
  4. Step 4: Simplify right side
    495,561.80x = 303,344,627,032.86
  5. Step 5: Solve for x
    x = 303,344,627,032.86/495,561.80
  6. Step 6: Final answer
    x = 612,122.70

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Similar ratio
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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.