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Finding the Third Proportional to 520,587 and 787,437

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Solution

The third proportional to 520,587 and 787,437 is: 1,191,072.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,587 : 787,437 = 787,437 : x
  2. Step 2: Convert to fraction form
    520,587/787,437 = 787,437/x
  3. Step 3: Cross multiply
    520,587x = 787,437 × 787,437
  4. Step 4: Simplify right side
    520,587x = 620,057,028,969
  5. Step 5: Solve for x
    x = 620,057,028,969/520,587
  6. Step 6: Final answer
    x = 1,191,072.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.