Home / 491,946.20-678,934.04-287,984.75

Finding the Fourth Proportional to 491,946.20, 678,934.04 and 287,984.75

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Solution

The fourth proportional to 491,946.20, 678,934.04 and 287,984.75 is: 397,447.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,946.20 : 678,934.04 = 287,984.75 : x
  2. Step 2: Convert to fraction form
    491,946.20/678,934.04 = 287,984.75/x
  3. Step 3: Cross multiply
    491,946.20x = 678,934.04 × 287,984.75
  4. Step 4: Simplify right side
    491,946.20x = 195,522,644,941.30
  5. Step 5: Solve for x
    x = 195,522,644,941.30/491,946.20
  6. Step 6: Final answer
    x = 397,447.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.