Home / 878,474.88-1,317,712.32-213,621.12

Finding the Fourth Proportional to 878,474.88, 1,317,712.32 and 213,621.12

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Solution

The fourth proportional to 878,474.88, 1,317,712.32 and 213,621.12 is: 320,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,474.88 : 1,317,712.32 = 213,621.12 : x
  2. Step 2: Convert to fraction form
    878,474.88/1,317,712.32 = 213,621.12/x
  3. Step 3: Cross multiply
    878,474.88x = 1,317,712.32 × 213,621.12
  4. Step 4: Simplify right side
    878,474.88x = 281,491,181,636.20
  5. Step 5: Solve for x
    x = 281,491,181,636.20/878,474.88
  6. Step 6: Final answer
    x = 320,431.68

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Similar ratio
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1.5x scale

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.