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Finding the Third Proportional to 917,868 and 1,290,276.75

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Solution

The third proportional to 917,868 and 1,290,276.75 is: 1,813,783.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,868 : 1,290,276.75 = 1,290,276.75 : x
  2. Step 2: Convert to fraction form
    917,868/1,290,276.75 = 1,290,276.75/x
  3. Step 3: Cross multiply
    917,868x = 1,290,276.75 × 1,290,276.75
  4. Step 4: Simplify right side
    917,868x = 1,664,814,091,590.56
  5. Step 5: Solve for x
    x = 1,664,814,091,590.56/917,868
  6. Step 6: Final answer
    x = 1,813,783.78

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.