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Finding the Third Proportional to 520,130 and 778,089

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Solution

The third proportional to 520,130 and 778,089 is: 1,163,983.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,130 : 778,089 = 778,089 : x
  2. Step 2: Convert to fraction form
    520,130/778,089 = 778,089/x
  3. Step 3: Cross multiply
    520,130x = 778,089 × 778,089
  4. Step 4: Simplify right side
    520,130x = 605,422,491,921
  5. Step 5: Solve for x
    x = 605,422,491,921/520,130
  6. Step 6: Final answer
    x = 1,163,983.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.