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Finding the Fourth Proportional to 720,149.76, 1,080,196.80 and 180,405.12

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Solution

The fourth proportional to 720,149.76, 1,080,196.80 and 180,405.12 is: 270,600.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,149.76 : 1,080,196.80 = 180,405.12 : x
  2. Step 2: Convert to fraction form
    720,149.76/1,080,196.80 = 180,405.12/x
  3. Step 3: Cross multiply
    720,149.76x = 1,080,196.80 × 180,405.12
  4. Step 4: Simplify right side
    720,149.76x = 194,873,033,327.62
  5. Step 5: Solve for x
    x = 194,873,033,327.62/720,149.76
  6. Step 6: Final answer
    x = 270,600.71

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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.