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Finding the Third Proportional to 387,180.75 and 830,394.75

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Solution

The third proportional to 387,180.75 and 830,394.75 is: 1,780,965.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,180.75 : 830,394.75 = 830,394.75 : x
  2. Step 2: Convert to fraction form
    387,180.75/830,394.75 = 830,394.75/x
  3. Step 3: Cross multiply
    387,180.75x = 830,394.75 × 830,394.75
  4. Step 4: Simplify right side
    387,180.75x = 689,555,440,827.56
  5. Step 5: Solve for x
    x = 689,555,440,827.56/387,180.75
  6. Step 6: Final answer
    x = 1,780,965.20

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.