Home / 809,776.48-1,215,401.94-431,015.34

Finding the Fourth Proportional to 809,776.48, 1,215,401.94 and 431,015.34

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Solution

The fourth proportional to 809,776.48, 1,215,401.94 and 431,015.34 is: 646,915.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,776.48 : 1,215,401.94 = 431,015.34 : x
  2. Step 2: Convert to fraction form
    809,776.48/1,215,401.94 = 431,015.34/x
  3. Step 3: Cross multiply
    809,776.48x = 1,215,401.94 × 431,015.34
  4. Step 4: Simplify right side
    809,776.48x = 523,856,880,405.76
  5. Step 5: Solve for x
    x = 523,856,880,405.76/809,776.48
  6. Step 6: Final answer
    x = 646,915.41

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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.