Home / 816,121.20-1,224,181.80-810,872.40

Finding the Fourth Proportional to 816,121.20, 1,224,181.80 and 810,872.40

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Solution

The fourth proportional to 816,121.20, 1,224,181.80 and 810,872.40 is: 1,216,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,121.20 : 1,224,181.80 = 810,872.40 : x
  2. Step 2: Convert to fraction form
    816,121.20/1,224,181.80 = 810,872.40/x
  3. Step 3: Cross multiply
    816,121.20x = 1,224,181.80 × 810,872.40
  4. Step 4: Simplify right side
    816,121.20x = 992,655,234,202.32
  5. Step 5: Solve for x
    x = 992,655,234,202.32/816,121.20
  6. Step 6: Final answer
    x = 1,216,308.60

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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.