Home / 752,980.56-1,129,139.28-353,734.80

Finding the Fourth Proportional to 752,980.56, 1,129,139.28 and 353,734.80

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Solution

The fourth proportional to 752,980.56, 1,129,139.28 and 353,734.80 is: 530,446.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,980.56 : 1,129,139.28 = 353,734.80 : x
  2. Step 2: Convert to fraction form
    752,980.56/1,129,139.28 = 353,734.80/x
  3. Step 3: Cross multiply
    752,980.56x = 1,129,139.28 × 353,734.80
  4. Step 4: Simplify right side
    752,980.56x = 399,415,857,382.94
  5. Step 5: Solve for x
    x = 399,415,857,382.94/752,980.56
  6. Step 6: Final answer
    x = 530,446.44

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1.5x scale

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.