Home / 807,458.20-1,211,187.30-508,859.80

Finding the Fourth Proportional to 807,458.20, 1,211,187.30 and 508,859.80

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Solution

The fourth proportional to 807,458.20, 1,211,187.30 and 508,859.80 is: 763,289.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,458.20 : 1,211,187.30 = 508,859.80 : x
  2. Step 2: Convert to fraction form
    807,458.20/1,211,187.30 = 508,859.80/x
  3. Step 3: Cross multiply
    807,458.20x = 1,211,187.30 × 508,859.80
  4. Step 4: Simplify right side
    807,458.20x = 616,324,527,240.54
  5. Step 5: Solve for x
    x = 616,324,527,240.54/807,458.20
  6. Step 6: Final answer
    x = 763,289.70

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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.