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Finding the Third Proportional to 439,835.06 and 679,954.50

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Solution

The third proportional to 439,835.06 and 679,954.50 is: 1,051,162.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,835.06 : 679,954.50 = 679,954.50 : x
  2. Step 2: Convert to fraction form
    439,835.06/679,954.50 = 679,954.50/x
  3. Step 3: Cross multiply
    439,835.06x = 679,954.50 × 679,954.50
  4. Step 4: Simplify right side
    439,835.06x = 462,338,122,070.25
  5. Step 5: Solve for x
    x = 462,338,122,070.25/439,835.06
  6. Step 6: Final answer
    x = 1,051,162.50

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.