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Finding the Third Proportional to 1,490,079.66 and 3,218,371.31

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Solution

The third proportional to 1,490,079.66 and 3,218,371.31 is: 6,951,248.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,079.66 : 3,218,371.31 = 3,218,371.31 : x
  2. Step 2: Convert to fraction form
    1,490,079.66/3,218,371.31 = 3,218,371.31/x
  3. Step 3: Cross multiply
    1,490,079.66x = 3,218,371.31 × 3,218,371.31
  4. Step 4: Simplify right side
    1,490,079.66x = 10,357,913,905,122.97
  5. Step 5: Solve for x
    x = 10,357,913,905,122.97/1,490,079.66
  6. Step 6: Final answer
    x = 6,951,248.45

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.