Home / 782,101.76-1,172,860.80-308,629.76

Finding the Fourth Proportional to 782,101.76, 1,172,860.80 and 308,629.76

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Solution

The fourth proportional to 782,101.76, 1,172,860.80 and 308,629.76 is: 462,829.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,101.76 : 1,172,860.80 = 308,629.76 : x
  2. Step 2: Convert to fraction form
    782,101.76/1,172,860.80 = 308,629.76/x
  3. Step 3: Cross multiply
    782,101.76x = 1,172,860.80 × 308,629.76
  4. Step 4: Simplify right side
    782,101.76x = 361,979,747,217.41
  5. Step 5: Solve for x
    x = 361,979,747,217.41/782,101.76
  6. Step 6: Final answer
    x = 462,829.48

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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.