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Finding the Third Proportional to 913,400 and 1,276,989

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Solution

The third proportional to 913,400 and 1,276,989 is: 1,785,308.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,400 : 1,276,989 = 1,276,989 : x
  2. Step 2: Convert to fraction form
    913,400/1,276,989 = 1,276,989/x
  3. Step 3: Cross multiply
    913,400x = 1,276,989 × 1,276,989
  4. Step 4: Simplify right side
    913,400x = 1,630,700,906,121
  5. Step 5: Solve for x
    x = 1,630,700,906,121/913,400
  6. Step 6: Final answer
    x = 1,785,308.63

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.