Home / 690,344.80-1,035,517.20-191,708.80

Finding the Fourth Proportional to 690,344.80, 1,035,517.20 and 191,708.80

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Solution

The fourth proportional to 690,344.80, 1,035,517.20 and 191,708.80 is: 287,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,344.80 : 1,035,517.20 = 191,708.80 : x
  2. Step 2: Convert to fraction form
    690,344.80/1,035,517.20 = 191,708.80/x
  3. Step 3: Cross multiply
    690,344.80x = 1,035,517.20 × 191,708.80
  4. Step 4: Simplify right side
    690,344.80x = 198,517,759,791.36
  5. Step 5: Solve for x
    x = 198,517,759,791.36/690,344.80
  6. Step 6: Final answer
    x = 287,563.20

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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.