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Finding the Third Proportional to 306,792 and 657,300

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Solution

The third proportional to 306,792 and 657,300 is: 1,408,261.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,792 : 657,300 = 657,300 : x
  2. Step 2: Convert to fraction form
    306,792/657,300 = 657,300/x
  3. Step 3: Cross multiply
    306,792x = 657,300 × 657,300
  4. Step 4: Simplify right side
    306,792x = 432,043,290,000
  5. Step 5: Solve for x
    x = 432,043,290,000/306,792
  6. Step 6: Final answer
    x = 1,408,261.26

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.