Home / 718,220.80-1,077,331.20-419,039.20

Finding the Fourth Proportional to 718,220.80, 1,077,331.20 and 419,039.20

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Solution

The fourth proportional to 718,220.80, 1,077,331.20 and 419,039.20 is: 628,558.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,220.80 : 1,077,331.20 = 419,039.20 : x
  2. Step 2: Convert to fraction form
    718,220.80/1,077,331.20 = 419,039.20/x
  3. Step 3: Cross multiply
    718,220.80x = 1,077,331.20 × 419,039.20
  4. Step 4: Simplify right side
    718,220.80x = 451,444,004,183.04
  5. Step 5: Solve for x
    x = 451,444,004,183.04/718,220.80
  6. Step 6: Final answer
    x = 628,558.80

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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.