Home / 986,711.40-1,479,629.70-453,958.20

Finding the Fourth Proportional to 986,711.40, 1,479,629.70 and 453,958.20

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Solution

The fourth proportional to 986,711.40, 1,479,629.70 and 453,958.20 is: 680,736.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,711.40 : 1,479,629.70 = 453,958.20 : x
  2. Step 2: Convert to fraction form
    986,711.40/1,479,629.70 = 453,958.20/x
  3. Step 3: Cross multiply
    986,711.40x = 1,479,629.70 × 453,958.20
  4. Step 4: Simplify right side
    986,711.40x = 671,690,035,278.54
  5. Step 5: Solve for x
    x = 671,690,035,278.54/986,711.40
  6. Step 6: Final answer
    x = 680,736.06

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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.