Home / 2,980,821.20-4,471,231.80-1,087,316.60

Finding the Fourth Proportional to 2,980,821.20, 4,471,231.80 and 1,087,316.60

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Solution

The fourth proportional to 2,980,821.20, 4,471,231.80 and 1,087,316.60 is: 1,630,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980,821.20 : 4,471,231.80 = 1,087,316.60 : x
  2. Step 2: Convert to fraction form
    2,980,821.20/4,471,231.80 = 1,087,316.60/x
  3. Step 3: Cross multiply
    2,980,821.20x = 4,471,231.80 × 1,087,316.60
  4. Step 4: Simplify right side
    2,980,821.20x = 4,861,644,558,587.88
  5. Step 5: Solve for x
    x = 4,861,644,558,587.88/2,980,821.20
  6. Step 6: Final answer
    x = 1,630,974.90

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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.