Home / 2,187,416.80-3,281,125.20-989,378.20

Finding the Fourth Proportional to 2,187,416.80, 3,281,125.20 and 989,378.20

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Solution

The fourth proportional to 2,187,416.80, 3,281,125.20 and 989,378.20 is: 1,484,067.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,416.80 : 3,281,125.20 = 989,378.20 : x
  2. Step 2: Convert to fraction form
    2,187,416.80/3,281,125.20 = 989,378.20/x
  3. Step 3: Cross multiply
    2,187,416.80x = 3,281,125.20 × 989,378.20
  4. Step 4: Simplify right side
    2,187,416.80x = 3,246,273,744,350.64
  5. Step 5: Solve for x
    x = 3,246,273,744,350.64/2,187,416.80
  6. Step 6: Final answer
    x = 1,484,067.30

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Similar ratio
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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.