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Finding the Third Proportional to 931,557 and 1,318,419

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Solution

The third proportional to 931,557 and 1,318,419 is: 1,865,939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,557 : 1,318,419 = 1,318,419 : x
  2. Step 2: Convert to fraction form
    931,557/1,318,419 = 1,318,419/x
  3. Step 3: Cross multiply
    931,557x = 1,318,419 × 1,318,419
  4. Step 4: Simplify right side
    931,557x = 1,738,228,659,561
  5. Step 5: Solve for x
    x = 1,738,228,659,561/931,557
  6. Step 6: Final answer
    x = 1,865,939.13

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.