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Finding the Third Proportional to 679,119.75 and 919,030.50

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Solution

The third proportional to 679,119.75 and 919,030.50 is: 1,243,693.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,119.75 : 919,030.50 = 919,030.50 : x
  2. Step 2: Convert to fraction form
    679,119.75/919,030.50 = 919,030.50/x
  3. Step 3: Cross multiply
    679,119.75x = 919,030.50 × 919,030.50
  4. Step 4: Simplify right side
    679,119.75x = 844,617,059,930.25
  5. Step 5: Solve for x
    x = 844,617,059,930.25/679,119.75
  6. Step 6: Final answer
    x = 1,243,693.86

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.