Home / 816,214.38-1,223,074.17-342,639.78

Finding the Fourth Proportional to 816,214.38, 1,223,074.17 and 342,639.78

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Solution

The fourth proportional to 816,214.38, 1,223,074.17 and 342,639.78 is: 513,436.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,214.38 : 1,223,074.17 = 342,639.78 : x
  2. Step 2: Convert to fraction form
    816,214.38/1,223,074.17 = 342,639.78/x
  3. Step 3: Cross multiply
    816,214.38x = 1,223,074.17 × 342,639.78
  4. Step 4: Simplify right side
    816,214.38x = 419,073,864,532.48
  5. Step 5: Solve for x
    x = 419,073,864,532.48/816,214.38
  6. Step 6: Final answer
    x = 513,436.02

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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.