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Finding the Third Proportional to 402,534 and 853,020

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Solution

The third proportional to 402,534 and 853,020 is: 1,807,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,534 : 853,020 = 853,020 : x
  2. Step 2: Convert to fraction form
    402,534/853,020 = 853,020/x
  3. Step 3: Cross multiply
    402,534x = 853,020 × 853,020
  4. Step 4: Simplify right side
    402,534x = 727,643,120,400
  5. Step 5: Solve for x
    x = 727,643,120,400/402,534
  6. Step 6: Final answer
    x = 1,807,656.30

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.