Home / 816,132.80-1,223,324.40-310,498.40

Finding the Fourth Proportional to 816,132.80, 1,223,324.40 and 310,498.40

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Solution

The fourth proportional to 816,132.80, 1,223,324.40 and 310,498.40 is: 465,414.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,132.80 : 1,223,324.40 = 310,498.40 : x
  2. Step 2: Convert to fraction form
    816,132.80/1,223,324.40 = 310,498.40/x
  3. Step 3: Cross multiply
    816,132.80x = 1,223,324.40 × 310,498.40
  4. Step 4: Simplify right side
    816,132.80x = 379,840,268,880.96
  5. Step 5: Solve for x
    x = 379,840,268,880.96/816,132.80
  6. Step 6: Final answer
    x = 465,414.78

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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.