Home / 752,142.80-1,128,473.40-331,720.40

Finding the Fourth Proportional to 752,142.80, 1,128,473.40 and 331,720.40

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Solution

The fourth proportional to 752,142.80, 1,128,473.40 and 331,720.40 is: 497,694.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,142.80 : 1,128,473.40 = 331,720.40 : x
  2. Step 2: Convert to fraction form
    752,142.80/1,128,473.40 = 331,720.40/x
  3. Step 3: Cross multiply
    752,142.80x = 1,128,473.40 × 331,720.40
  4. Step 4: Simplify right side
    752,142.80x = 374,337,647,637.36
  5. Step 5: Solve for x
    x = 374,337,647,637.36/752,142.80
  6. Step 6: Final answer
    x = 497,694.92

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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.