Home / 1,243,116.20-1,864,674.30-1,189,972.10

Finding the Fourth Proportional to 1,243,116.20, 1,864,674.30 and 1,189,972.10

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Solution

The fourth proportional to 1,243,116.20, 1,864,674.30 and 1,189,972.10 is: 1,784,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,116.20 : 1,864,674.30 = 1,189,972.10 : x
  2. Step 2: Convert to fraction form
    1,243,116.20/1,864,674.30 = 1,189,972.10/x
  3. Step 3: Cross multiply
    1,243,116.20x = 1,864,674.30 × 1,189,972.10
  4. Step 4: Simplify right side
    1,243,116.20x = 2,218,910,392,587.03
  5. Step 5: Solve for x
    x = 2,218,910,392,587.03/1,243,116.20
  6. Step 6: Final answer
    x = 1,784,958.15

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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.