Home / 782,037.88-1,079,080.86-455,419.96

Finding the Fourth Proportional to 782,037.88, 1,079,080.86 and 455,419.96

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Solution

The fourth proportional to 782,037.88, 1,079,080.86 and 455,419.96 is: 628,403.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,037.88 : 1,079,080.86 = 455,419.96 : x
  2. Step 2: Convert to fraction form
    782,037.88/1,079,080.86 = 455,419.96/x
  3. Step 3: Cross multiply
    782,037.88x = 1,079,080.86 × 455,419.96
  4. Step 4: Simplify right side
    782,037.88x = 491,434,962,097.97
  5. Step 5: Solve for x
    x = 491,434,962,097.97/782,037.88
  6. Step 6: Final answer
    x = 628,403.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.