Home / 681,428.80-1,022,143.20-415,052.20

Finding the Fourth Proportional to 681,428.80, 1,022,143.20 and 415,052.20

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Solution

The fourth proportional to 681,428.80, 1,022,143.20 and 415,052.20 is: 622,578.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,428.80 : 1,022,143.20 = 415,052.20 : x
  2. Step 2: Convert to fraction form
    681,428.80/1,022,143.20 = 415,052.20/x
  3. Step 3: Cross multiply
    681,428.80x = 1,022,143.20 × 415,052.20
  4. Step 4: Simplify right side
    681,428.80x = 424,242,783,875.04
  5. Step 5: Solve for x
    x = 424,242,783,875.04/681,428.80
  6. Step 6: Final answer
    x = 622,578.30

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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.