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Finding the Third Proportional to 438,766.88 and 655,279.88

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Solution

The third proportional to 438,766.88 and 655,279.88 is: 978,632.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,766.88 : 655,279.88 = 655,279.88 : x
  2. Step 2: Convert to fraction form
    438,766.88/655,279.88 = 655,279.88/x
  3. Step 3: Cross multiply
    438,766.88x = 655,279.88 × 655,279.88
  4. Step 4: Simplify right side
    438,766.88x = 429,391,714,580.02
  5. Step 5: Solve for x
    x = 429,391,714,580.02/438,766.88
  6. Step 6: Final answer
    x = 978,632.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.