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Finding the Third Proportional to 287,106 and 440,703

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Solution

The third proportional to 287,106 and 440,703 is: 676,471.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,106 : 440,703 = 440,703 : x
  2. Step 2: Convert to fraction form
    287,106/440,703 = 440,703/x
  3. Step 3: Cross multiply
    287,106x = 440,703 × 440,703
  4. Step 4: Simplify right side
    287,106x = 194,219,134,209
  5. Step 5: Solve for x
    x = 194,219,134,209/287,106
  6. Step 6: Final answer
    x = 676,471.88

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.