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Finding the Third Proportional to 630,260 and 918,306

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Solution

The third proportional to 630,260 and 918,306 is: 1,337,996.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,260 : 918,306 = 918,306 : x
  2. Step 2: Convert to fraction form
    630,260/918,306 = 918,306/x
  3. Step 3: Cross multiply
    630,260x = 918,306 × 918,306
  4. Step 4: Simplify right side
    630,260x = 843,285,909,636
  5. Step 5: Solve for x
    x = 843,285,909,636/630,260
  6. Step 6: Final answer
    x = 1,337,996.87

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.