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Finding the Third Proportional to 448,630 and 689,577

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Solution

The third proportional to 448,630 and 689,577 is: 1,059,930.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,630 : 689,577 = 689,577 : x
  2. Step 2: Convert to fraction form
    448,630/689,577 = 689,577/x
  3. Step 3: Cross multiply
    448,630x = 689,577 × 689,577
  4. Step 4: Simplify right side
    448,630x = 475,516,438,929
  5. Step 5: Solve for x
    x = 475,516,438,929/448,630
  6. Step 6: Final answer
    x = 1,059,930.10

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.