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Finding the Third Proportional to 721,890 and 1,572,084

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Solution

The third proportional to 721,890 and 1,572,084 is: 3,423,579.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,890 : 1,572,084 = 1,572,084 : x
  2. Step 2: Convert to fraction form
    721,890/1,572,084 = 1,572,084/x
  3. Step 3: Cross multiply
    721,890x = 1,572,084 × 1,572,084
  4. Step 4: Simplify right side
    721,890x = 2,471,448,103,056
  5. Step 5: Solve for x
    x = 2,471,448,103,056/721,890
  6. Step 6: Final answer
    x = 3,423,579.91

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.