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Finding the Third Proportional to 291,913.50 and 631,806

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Solution

The third proportional to 291,913.50 and 631,806 is: 1,367,455.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,913.50 : 631,806 = 631,806 : x
  2. Step 2: Convert to fraction form
    291,913.50/631,806 = 631,806/x
  3. Step 3: Cross multiply
    291,913.50x = 631,806 × 631,806
  4. Step 4: Simplify right side
    291,913.50x = 399,178,821,636
  5. Step 5: Solve for x
    x = 399,178,821,636/291,913.50
  6. Step 6: Final answer
    x = 1,367,455.84

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.