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Finding the Third Proportional to 618,475.50 and 905,539.50

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Solution

The third proportional to 618,475.50 and 905,539.50 is: 1,325,843.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,475.50 : 905,539.50 = 905,539.50 : x
  2. Step 2: Convert to fraction form
    618,475.50/905,539.50 = 905,539.50/x
  3. Step 3: Cross multiply
    618,475.50x = 905,539.50 × 905,539.50
  4. Step 4: Simplify right side
    618,475.50x = 820,001,786,060.25
  5. Step 5: Solve for x
    x = 820,001,786,060.25/618,475.50
  6. Step 6: Final answer
    x = 1,325,843.60

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.