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Finding the Third Proportional to 475,208 and 628,140

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Solution

The third proportional to 475,208 and 628,140 is: 830,288.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,208 : 628,140 = 628,140 : x
  2. Step 2: Convert to fraction form
    475,208/628,140 = 628,140/x
  3. Step 3: Cross multiply
    475,208x = 628,140 × 628,140
  4. Step 4: Simplify right side
    475,208x = 394,559,859,600
  5. Step 5: Solve for x
    x = 394,559,859,600/475,208
  6. Step 6: Final answer
    x = 830,288.76

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.