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Finding the Third Proportional to 420,652.50 and 912,657

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Solution

The third proportional to 420,652.50 and 912,657 is: 1,980,120.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,652.50 : 912,657 = 912,657 : x
  2. Step 2: Convert to fraction form
    420,652.50/912,657 = 912,657/x
  3. Step 3: Cross multiply
    420,652.50x = 912,657 × 912,657
  4. Step 4: Simplify right side
    420,652.50x = 832,942,799,649
  5. Step 5: Solve for x
    x = 832,942,799,649/420,652.50
  6. Step 6: Final answer
    x = 1,980,120.88

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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.