Home / 719,180.80-1,079,385.60-320,435.20

Finding the Fourth Proportional to 719,180.80, 1,079,385.60 and 320,435.20

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Solution

The fourth proportional to 719,180.80, 1,079,385.60 and 320,435.20 is: 480,926.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,180.80 : 1,079,385.60 = 320,435.20 : x
  2. Step 2: Convert to fraction form
    719,180.80/1,079,385.60 = 320,435.20/x
  3. Step 3: Cross multiply
    719,180.80x = 1,079,385.60 × 320,435.20
  4. Step 4: Simplify right side
    719,180.80x = 345,873,140,613.12
  5. Step 5: Solve for x
    x = 345,873,140,613.12/719,180.80
  6. Step 6: Final answer
    x = 480,926.55

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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.