Home / 810,511.35-1,215,766.87-305,185.56

Finding the Fourth Proportional to 810,511.35, 1,215,766.87 and 305,185.56

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Solution

The fourth proportional to 810,511.35, 1,215,766.87 and 305,185.56 is: 457,778.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,511.35 : 1,215,766.87 = 305,185.56 : x
  2. Step 2: Convert to fraction form
    810,511.35/1,215,766.87 = 305,185.56/x
  3. Step 3: Cross multiply
    810,511.35x = 1,215,766.87 × 305,185.56
  4. Step 4: Simplify right side
    810,511.35x = 371,034,487,728.31
  5. Step 5: Solve for x
    x = 371,034,487,728.31/810,511.35
  6. Step 6: Final answer
    x = 457,778.28

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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.