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Finding the Third Proportional to 292,645.50 and 638,470.50

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Solution

The third proportional to 292,645.50 and 638,470.50 is: 1,392,963.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,645.50 : 638,470.50 = 638,470.50 : x
  2. Step 2: Convert to fraction form
    292,645.50/638,470.50 = 638,470.50/x
  3. Step 3: Cross multiply
    292,645.50x = 638,470.50 × 638,470.50
  4. Step 4: Simplify right side
    292,645.50x = 407,644,579,370.25
  5. Step 5: Solve for x
    x = 407,644,579,370.25/292,645.50
  6. Step 6: Final answer
    x = 1,392,963.77

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.