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Finding the Third Proportional to 425,690 and 917,818

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Solution

The third proportional to 425,690 and 917,818 is: 1,978,881.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,690 : 917,818 = 917,818 : x
  2. Step 2: Convert to fraction form
    425,690/917,818 = 917,818/x
  3. Step 3: Cross multiply
    425,690x = 917,818 × 917,818
  4. Step 4: Simplify right side
    425,690x = 842,389,881,124
  5. Step 5: Solve for x
    x = 842,389,881,124/425,690
  6. Step 6: Final answer
    x = 1,978,881.07

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.