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Finding the Third Proportional to 1,318,439.91 and 1,981,170.28

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Solution

The third proportional to 1,318,439.91 and 1,981,170.28 is: 2,977,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,439.91 : 1,981,170.28 = 1,981,170.28 : x
  2. Step 2: Convert to fraction form
    1,318,439.91/1,981,170.28 = 1,981,170.28/x
  3. Step 3: Cross multiply
    1,318,439.91x = 1,981,170.28 × 1,981,170.28
  4. Step 4: Simplify right side
    1,318,439.91x = 3,925,035,683,308.20
  5. Step 5: Solve for x
    x = 3,925,035,683,308.20/1,318,439.91
  6. Step 6: Final answer
    x = 2,977,030.40

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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.