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Finding the Third Proportional to 717,912 and 1,111,485

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Solution

The third proportional to 717,912 and 1,111,485 is: 1,720,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,912 : 1,111,485 = 1,111,485 : x
  2. Step 2: Convert to fraction form
    717,912/1,111,485 = 1,111,485/x
  3. Step 3: Cross multiply
    717,912x = 1,111,485 × 1,111,485
  4. Step 4: Simplify right side
    717,912x = 1,235,398,905,225
  5. Step 5: Solve for x
    x = 1,235,398,905,225/717,912
  6. Step 6: Final answer
    x = 1,720,822.20

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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.