Home / 808,879.20-1,213,318.80-543,458.40

Finding the Fourth Proportional to 808,879.20, 1,213,318.80 and 543,458.40

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Solution

The fourth proportional to 808,879.20, 1,213,318.80 and 543,458.40 is: 815,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,879.20 : 1,213,318.80 = 543,458.40 : x
  2. Step 2: Convert to fraction form
    808,879.20/1,213,318.80 = 543,458.40/x
  3. Step 3: Cross multiply
    808,879.20x = 1,213,318.80 × 543,458.40
  4. Step 4: Simplify right side
    808,879.20x = 659,388,293,737.92
  5. Step 5: Solve for x
    x = 659,388,293,737.92/808,879.20
  6. Step 6: Final answer
    x = 815,187.60

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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.