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Finding the Third Proportional to 643,540 and 846,258

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Solution

The third proportional to 643,540 and 846,258 is: 1,112,833.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,540 : 846,258 = 846,258 : x
  2. Step 2: Convert to fraction form
    643,540/846,258 = 846,258/x
  3. Step 3: Cross multiply
    643,540x = 846,258 × 846,258
  4. Step 4: Simplify right side
    643,540x = 716,152,602,564
  5. Step 5: Solve for x
    x = 716,152,602,564/643,540
  6. Step 6: Final answer
    x = 1,112,833.08

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.