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Finding the Third Proportional to 634,440 and 1,379,472

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Solution

The third proportional to 634,440 and 1,379,472 is: 2,999,405.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,440 : 1,379,472 = 1,379,472 : x
  2. Step 2: Convert to fraction form
    634,440/1,379,472 = 1,379,472/x
  3. Step 3: Cross multiply
    634,440x = 1,379,472 × 1,379,472
  4. Step 4: Simplify right side
    634,440x = 1,902,942,998,784
  5. Step 5: Solve for x
    x = 1,902,942,998,784/634,440
  6. Step 6: Final answer
    x = 2,999,405.77

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.