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Finding the Third Proportional to 280,747 and 431,964

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Solution

The third proportional to 280,747 and 431,964 is: 664,630.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,747 : 431,964 = 431,964 : x
  2. Step 2: Convert to fraction form
    280,747/431,964 = 431,964/x
  3. Step 3: Cross multiply
    280,747x = 431,964 × 431,964
  4. Step 4: Simplify right side
    280,747x = 186,592,897,296
  5. Step 5: Solve for x
    x = 186,592,897,296/280,747
  6. Step 6: Final answer
    x = 664,630.07

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.