Home / 986,720.40-1,480,323.60-276,739.20

Finding the Fourth Proportional to 986,720.40, 1,480,323.60 and 276,739.20

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Solution

The fourth proportional to 986,720.40, 1,480,323.60 and 276,739.20 is: 415,176.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,720.40 : 1,480,323.60 = 276,739.20 : x
  2. Step 2: Convert to fraction form
    986,720.40/1,480,323.60 = 276,739.20/x
  3. Step 3: Cross multiply
    986,720.40x = 1,480,323.60 × 276,739.20
  4. Step 4: Simplify right side
    986,720.40x = 409,663,568,805.12
  5. Step 5: Solve for x
    x = 409,663,568,805.12/986,720.40
  6. Step 6: Final answer
    x = 415,176.95

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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.