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Finding the Third Proportional to 858,295 and 1,298,487

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Solution

The third proportional to 858,295 and 1,298,487 is: 1,964,439.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,295 : 1,298,487 = 1,298,487 : x
  2. Step 2: Convert to fraction form
    858,295/1,298,487 = 1,298,487/x
  3. Step 3: Cross multiply
    858,295x = 1,298,487 × 1,298,487
  4. Step 4: Simplify right side
    858,295x = 1,686,068,489,169
  5. Step 5: Solve for x
    x = 1,686,068,489,169/858,295
  6. Step 6: Final answer
    x = 1,964,439.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.