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Finding the Fourth Proportional to 613,825.62, 847,121.88 and 372,118.38

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Solution

The fourth proportional to 613,825.62, 847,121.88 and 372,118.38 is: 513,549.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,825.62 : 847,121.88 = 372,118.38 : x
  2. Step 2: Convert to fraction form
    613,825.62/847,121.88 = 372,118.38/x
  3. Step 3: Cross multiply
    613,825.62x = 847,121.88 × 372,118.38
  4. Step 4: Simplify right side
    613,825.62x = 315,229,621,648.15
  5. Step 5: Solve for x
    x = 315,229,621,648.15/613,825.62
  6. Step 6: Final answer
    x = 513,549.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.