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Finding the Third Proportional to 425,630 and 913,980

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Solution

The third proportional to 425,630 and 913,980 is: 1,962,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,630 : 913,980 = 913,980 : x
  2. Step 2: Convert to fraction form
    425,630/913,980 = 913,980/x
  3. Step 3: Cross multiply
    425,630x = 913,980 × 913,980
  4. Step 4: Simplify right side
    425,630x = 835,359,440,400
  5. Step 5: Solve for x
    x = 835,359,440,400/425,630
  6. Step 6: Final answer
    x = 1,962,642.30

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.