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Finding the Third Proportional to 7,812,274.50 and 12,431,400.75

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Solution

The third proportional to 7,812,274.50 and 12,431,400.75 is: 19,781,655.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812,274.50 : 12,431,400.75 = 12,431,400.75 : x
  2. Step 2: Convert to fraction form
    7,812,274.50/12,431,400.75 = 12,431,400.75/x
  3. Step 3: Cross multiply
    7,812,274.50x = 12,431,400.75 × 12,431,400.75
  4. Step 4: Simplify right side
    7,812,274.50x = 154,539,724,607,100.56
  5. Step 5: Solve for x
    x = 154,539,724,607,100.56/7,812,274.50
  6. Step 6: Final answer
    x = 19,781,655.73

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.