Home / 816,972.32-1,224,711.48-343,691.12

Finding the Fourth Proportional to 816,972.32, 1,224,711.48 and 343,691.12

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Solution

The fourth proportional to 816,972.32, 1,224,711.48 and 343,691.12 is: 515,222.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,972.32 : 1,224,711.48 = 343,691.12 : x
  2. Step 2: Convert to fraction form
    816,972.32/1,224,711.48 = 343,691.12/x
  3. Step 3: Cross multiply
    816,972.32x = 1,224,711.48 × 343,691.12
  4. Step 4: Simplify right side
    816,972.32x = 420,922,460,238.06
  5. Step 5: Solve for x
    x = 420,922,460,238.06/816,972.32
  6. Step 6: Final answer
    x = 515,222.43

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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.