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Finding the Third Proportional to 529,628 and 680,029

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Solution

The third proportional to 529,628 and 680,029 is: 873,140.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,628 : 680,029 = 680,029 : x
  2. Step 2: Convert to fraction form
    529,628/680,029 = 680,029/x
  3. Step 3: Cross multiply
    529,628x = 680,029 × 680,029
  4. Step 4: Simplify right side
    529,628x = 462,439,440,841
  5. Step 5: Solve for x
    x = 462,439,440,841/529,628
  6. Step 6: Final answer
    x = 873,140.09

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.