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Finding the Fourth Proportional to 376,716.60, 566,387.10 and 318,979.80

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Solution

The fourth proportional to 376,716.60, 566,387.10 and 318,979.80 is: 479,580.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,716.60 : 566,387.10 = 318,979.80 : x
  2. Step 2: Convert to fraction form
    376,716.60/566,387.10 = 318,979.80/x
  3. Step 3: Cross multiply
    376,716.60x = 566,387.10 × 318,979.80
  4. Step 4: Simplify right side
    376,716.60x = 180,666,043,880.58
  5. Step 5: Solve for x
    x = 180,666,043,880.58/376,716.60
  6. Step 6: Final answer
    x = 479,580.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.