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Finding the Third Proportional to 402,720 and 882,940

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Solution

The third proportional to 402,720 and 882,940 is: 1,935,794.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,720 : 882,940 = 882,940 : x
  2. Step 2: Convert to fraction form
    402,720/882,940 = 882,940/x
  3. Step 3: Cross multiply
    402,720x = 882,940 × 882,940
  4. Step 4: Simplify right side
    402,720x = 779,583,043,600
  5. Step 5: Solve for x
    x = 779,583,043,600/402,720
  6. Step 6: Final answer
    x = 1,935,794.21

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.