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Finding the Fourth Proportional to 571,067.90, 787,778.91 and 387,244.31

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Solution

The fourth proportional to 571,067.90, 787,778.91 and 387,244.31 is: 534,197.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,067.90 : 787,778.91 = 387,244.31 : x
  2. Step 2: Convert to fraction form
    571,067.90/787,778.91 = 387,244.31/x
  3. Step 3: Cross multiply
    571,067.90x = 787,778.91 × 387,244.31
  4. Step 4: Simplify right side
    571,067.90x = 305,062,900,435.50
  5. Step 5: Solve for x
    x = 305,062,900,435.50/571,067.90
  6. Step 6: Final answer
    x = 534,197.25

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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.