Home / 718,309.80-1,077,464.70-419,128.20

Finding the Fourth Proportional to 718,309.80, 1,077,464.70 and 419,128.20

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Solution

The fourth proportional to 718,309.80, 1,077,464.70 and 419,128.20 is: 628,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,309.80 : 1,077,464.70 = 419,128.20 : x
  2. Step 2: Convert to fraction form
    718,309.80/1,077,464.70 = 419,128.20/x
  3. Step 3: Cross multiply
    718,309.80x = 1,077,464.70 × 419,128.20
  4. Step 4: Simplify right side
    718,309.80x = 451,595,840,274.54
  5. Step 5: Solve for x
    x = 451,595,840,274.54/718,309.80
  6. Step 6: Final answer
    x = 628,692.30

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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.