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Finding the Third Proportional to 426,019.50 and 918,438.75

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Solution

The third proportional to 426,019.50 and 918,438.75 is: 1,980,026.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,019.50 : 918,438.75 = 918,438.75 : x
  2. Step 2: Convert to fraction form
    426,019.50/918,438.75 = 918,438.75/x
  3. Step 3: Cross multiply
    426,019.50x = 918,438.75 × 918,438.75
  4. Step 4: Simplify right side
    426,019.50x = 843,529,737,501.56
  5. Step 5: Solve for x
    x = 843,529,737,501.56/426,019.50
  6. Step 6: Final answer
    x = 1,980,026.12

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.