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Finding the Third Proportional to 426,948 and 669,720

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Solution

The third proportional to 426,948 and 669,720 is: 1,050,537.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,948 : 669,720 = 669,720 : x
  2. Step 2: Convert to fraction form
    426,948/669,720 = 669,720/x
  3. Step 3: Cross multiply
    426,948x = 669,720 × 669,720
  4. Step 4: Simplify right side
    426,948x = 448,524,878,400
  5. Step 5: Solve for x
    x = 448,524,878,400/426,948
  6. Step 6: Final answer
    x = 1,050,537.49

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.