Home / 689,969.80-1,034,954.70-658,969.08

Finding the Fourth Proportional to 689,969.80, 1,034,954.70 and 658,969.08

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Solution

The fourth proportional to 689,969.80, 1,034,954.70 and 658,969.08 is: 988,453.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,969.80 : 1,034,954.70 = 658,969.08 : x
  2. Step 2: Convert to fraction form
    689,969.80/1,034,954.70 = 658,969.08/x
  3. Step 3: Cross multiply
    689,969.80x = 1,034,954.70 × 658,969.08
  4. Step 4: Simplify right side
    689,969.80x = 682,003,146,500.68
  5. Step 5: Solve for x
    x = 682,003,146,500.68/689,969.80
  6. Step 6: Final answer
    x = 988,453.62

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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.