Home / 807,495.40-1,211,247.68-208,415.60

Finding the Fourth Proportional to 807,495.40, 1,211,247.68 and 208,415.60

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Solution

The fourth proportional to 807,495.40, 1,211,247.68 and 208,415.60 is: 312,624.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,495.40 : 1,211,247.68 = 208,415.60 : x
  2. Step 2: Convert to fraction form
    807,495.40/1,211,247.68 = 208,415.60/x
  3. Step 3: Cross multiply
    807,495.40x = 1,211,247.68 × 208,415.60
  4. Step 4: Simplify right side
    807,495.40x = 252,442,915,524.97
  5. Step 5: Solve for x
    x = 252,442,915,524.97/807,495.40
  6. Step 6: Final answer
    x = 312,624.59

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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.