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Finding the Third Proportional to 861,684.50 and 1,207,492.50

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Solution

The third proportional to 861,684.50 and 1,207,492.50 is: 1,692,078.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,684.50 : 1,207,492.50 = 1,207,492.50 : x
  2. Step 2: Convert to fraction form
    861,684.50/1,207,492.50 = 1,207,492.50/x
  3. Step 3: Cross multiply
    861,684.50x = 1,207,492.50 × 1,207,492.50
  4. Step 4: Simplify right side
    861,684.50x = 1,458,038,137,556.25
  5. Step 5: Solve for x
    x = 1,458,038,137,556.25/861,684.50
  6. Step 6: Final answer
    x = 1,692,078.87

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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.