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Finding the Third Proportional to 413,217 and 638,051.50

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Solution

The third proportional to 413,217 and 638,051.50 is: 985,220.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,217 : 638,051.50 = 638,051.50 : x
  2. Step 2: Convert to fraction form
    413,217/638,051.50 = 638,051.50/x
  3. Step 3: Cross multiply
    413,217x = 638,051.50 × 638,051.50
  4. Step 4: Simplify right side
    413,217x = 407,109,716,652.25
  5. Step 5: Solve for x
    x = 407,109,716,652.25/413,217
  6. Step 6: Final answer
    x = 985,220.15

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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.