Home / 790,414.57-1,185,745.79-257,812.64

Finding the Fourth Proportional to 790,414.57, 1,185,745.79 and 257,812.64

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Solution

The fourth proportional to 790,414.57, 1,185,745.79 and 257,812.64 is: 386,759.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,414.57 : 1,185,745.79 = 257,812.64 : x
  2. Step 2: Convert to fraction form
    790,414.57/1,185,745.79 = 257,812.64/x
  3. Step 3: Cross multiply
    790,414.57x = 1,185,745.79 × 257,812.64
  4. Step 4: Simplify right side
    790,414.57x = 305,700,247,204.59
  5. Step 5: Solve for x
    x = 305,700,247,204.59/790,414.57
  6. Step 6: Final answer
    x = 386,759.38

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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.