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Finding the Fourth Proportional to 613,814.82, 847,107.02 and 372,107.58

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Solution

The fourth proportional to 613,814.82, 847,107.02 and 372,107.58 is: 513,534.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,814.82 : 847,107.02 = 372,107.58 : x
  2. Step 2: Convert to fraction form
    613,814.82/847,107.02 = 372,107.58/x
  3. Step 3: Cross multiply
    613,814.82x = 847,107.02 × 372,107.58
  4. Step 4: Simplify right side
    613,814.82x = 315,214,943,213.21
  5. Step 5: Solve for x
    x = 315,214,943,213.21/613,814.82
  6. Step 6: Final answer
    x = 513,534.27

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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.