Home / 680,945.70-1,021,418.55-629,769.90

Finding the Fourth Proportional to 680,945.70, 1,021,418.55 and 629,769.90

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Solution

The fourth proportional to 680,945.70, 1,021,418.55 and 629,769.90 is: 944,654.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,945.70 : 1,021,418.55 = 629,769.90 : x
  2. Step 2: Convert to fraction form
    680,945.70/1,021,418.55 = 629,769.90/x
  3. Step 3: Cross multiply
    680,945.70x = 1,021,418.55 × 629,769.90
  4. Step 4: Simplify right side
    680,945.70x = 643,258,658,091.65
  5. Step 5: Solve for x
    x = 643,258,658,091.65/680,945.70
  6. Step 6: Final answer
    x = 944,654.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.