Home / 1,979,742.20-2,975,834.10-1,942,417.40

Finding the Fourth Proportional to 1,979,742.20, 2,975,834.10 and 1,942,417.40

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Solution

The fourth proportional to 1,979,742.20, 2,975,834.10 and 1,942,417.40 is: 2,919,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979,742.20 : 2,975,834.10 = 1,942,417.40 : x
  2. Step 2: Convert to fraction form
    1,979,742.20/2,975,834.10 = 1,942,417.40/x
  3. Step 3: Cross multiply
    1,979,742.20x = 2,975,834.10 × 1,942,417.40
  4. Step 4: Simplify right side
    1,979,742.20x = 5,780,311,935,353.34
  5. Step 5: Solve for x
    x = 5,780,311,935,353.34/1,979,742.20
  6. Step 6: Final answer
    x = 2,919,729.62

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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.