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Finding the Fourth Proportional to 570,880.02, 787,067.60 and 491,163.86

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Solution

The fourth proportional to 570,880.02, 787,067.60 and 491,163.86 is: 677,163.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,880.02 : 787,067.60 = 491,163.86 : x
  2. Step 2: Convert to fraction form
    570,880.02/787,067.60 = 491,163.86/x
  3. Step 3: Cross multiply
    570,880.02x = 787,067.60 × 491,163.86
  4. Step 4: Simplify right side
    570,880.02x = 386,579,160,496.94
  5. Step 5: Solve for x
    x = 386,579,160,496.94/570,880.02
  6. Step 6: Final answer
    x = 677,163.58

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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.