Home / 809,126.25-1,213,747.70-310,490.25

Finding the Fourth Proportional to 809,126.25, 1,213,747.70 and 310,490.25

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Solution

The fourth proportional to 809,126.25, 1,213,747.70 and 310,490.25 is: 465,757.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,126.25 : 1,213,747.70 = 310,490.25 : x
  2. Step 2: Convert to fraction form
    809,126.25/1,213,747.70 = 310,490.25/x
  3. Step 3: Cross multiply
    809,126.25x = 1,213,747.70 × 310,490.25
  4. Step 4: Simplify right side
    809,126.25x = 376,856,825,257.47
  5. Step 5: Solve for x
    x = 376,856,825,257.47/809,126.25
  6. Step 6: Final answer
    x = 465,757.75

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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.