Home / 776,506.80-1,164,219.78-343,989.34

Finding the Fourth Proportional to 776,506.80, 1,164,219.78 and 343,989.34

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Solution

The fourth proportional to 776,506.80, 1,164,219.78 and 343,989.34 is: 515,744.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,506.80 : 1,164,219.78 = 343,989.34 : x
  2. Step 2: Convert to fraction form
    776,506.80/1,164,219.78 = 343,989.34/x
  3. Step 3: Cross multiply
    776,506.80x = 1,164,219.78 × 343,989.34
  4. Step 4: Simplify right side
    776,506.80x = 400,479,193,737.15
  5. Step 5: Solve for x
    x = 400,479,193,737.15/776,506.80
  6. Step 6: Final answer
    x = 515,744.61

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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.