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Finding the Fourth Proportional to 613,825.14, 847,121.27 and 372,117.90

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Solution

The fourth proportional to 613,825.14, 847,121.27 and 372,117.90 is: 513,548.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,825.14 : 847,121.27 = 372,117.90 : x
  2. Step 2: Convert to fraction form
    613,825.14/847,121.27 = 372,117.90/x
  3. Step 3: Cross multiply
    613,825.14x = 847,121.27 × 372,117.90
  4. Step 4: Simplify right side
    613,825.14x = 315,228,988,037.73
  5. Step 5: Solve for x
    x = 315,228,988,037.73/613,825.14
  6. Step 6: Final answer
    x = 513,548.51

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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.