Home / 976,540.80-1,463,936.40-639,742.80

Finding the Fourth Proportional to 976,540.80, 1,463,936.40 and 639,742.80

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Solution

The fourth proportional to 976,540.80, 1,463,936.40 and 639,742.80 is: 959,041.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,540.80 : 1,463,936.40 = 639,742.80 : x
  2. Step 2: Convert to fraction form
    976,540.80/1,463,936.40 = 639,742.80/x
  3. Step 3: Cross multiply
    976,540.80x = 1,463,936.40 × 639,742.80
  4. Step 4: Simplify right side
    976,540.80x = 936,542,771,557.92
  5. Step 5: Solve for x
    x = 936,542,771,557.92/976,540.80
  6. Step 6: Final answer
    x = 959,041.11

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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.