Home / 810,019.20-1,215,028.80-360,739.20

Finding the Fourth Proportional to 810,019.20, 1,215,028.80 and 360,739.20

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Solution

The fourth proportional to 810,019.20, 1,215,028.80 and 360,739.20 is: 541,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,019.20 : 1,215,028.80 = 360,739.20 : x
  2. Step 2: Convert to fraction form
    810,019.20/1,215,028.80 = 360,739.20/x
  3. Step 3: Cross multiply
    810,019.20x = 1,215,028.80 × 360,739.20
  4. Step 4: Simplify right side
    810,019.20x = 438,308,517,288.96
  5. Step 5: Solve for x
    x = 438,308,517,288.96/810,019.20
  6. Step 6: Final answer
    x = 541,108.80

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Similar ratio
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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.