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Finding the Third Proportional to 637,787.50 and 987,489

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Solution

The third proportional to 637,787.50 and 987,489 is: 1,528,933.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,787.50 : 987,489 = 987,489 : x
  2. Step 2: Convert to fraction form
    637,787.50/987,489 = 987,489/x
  3. Step 3: Cross multiply
    637,787.50x = 987,489 × 987,489
  4. Step 4: Simplify right side
    637,787.50x = 975,134,525,121
  5. Step 5: Solve for x
    x = 975,134,525,121/637,787.50
  6. Step 6: Final answer
    x = 1,528,933.27

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.