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Finding the Third Proportional to 555,621 and 829,772

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Solution

The third proportional to 555,621 and 829,772 is: 1,239,192.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,621 : 829,772 = 829,772 : x
  2. Step 2: Convert to fraction form
    555,621/829,772 = 829,772/x
  3. Step 3: Cross multiply
    555,621x = 829,772 × 829,772
  4. Step 4: Simplify right side
    555,621x = 688,521,571,984
  5. Step 5: Solve for x
    x = 688,521,571,984/555,621
  6. Step 6: Final answer
    x = 1,239,192.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.