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Finding the Fourth Proportional to 570,850.60, 787,026.90 and 491,134.36

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Solution

The fourth proportional to 570,850.60, 787,026.90 and 491,134.36 is: 677,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,850.60 : 787,026.90 = 491,134.36 : x
  2. Step 2: Convert to fraction form
    570,850.60/787,026.90 = 491,134.36/x
  3. Step 3: Cross multiply
    570,850.60x = 787,026.90 × 491,134.36
  4. Step 4: Simplify right side
    570,850.60x = 386,535,952,834.28
  5. Step 5: Solve for x
    x = 386,535,952,834.28/570,850.60
  6. Step 6: Final answer
    x = 677,122.79

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1.5x scale

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.