Home / 821,220.71-1,231,833.95-252,597.97

Finding the Fourth Proportional to 821,220.71, 1,231,833.95 and 252,597.97

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Solution

The fourth proportional to 821,220.71, 1,231,833.95 and 252,597.97 is: 378,897.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,220.71 : 1,231,833.95 = 252,597.97 : x
  2. Step 2: Convert to fraction form
    821,220.71/1,231,833.95 = 252,597.97/x
  3. Step 3: Cross multiply
    821,220.71x = 1,231,833.95 × 252,597.97
  4. Step 4: Simplify right side
    821,220.71x = 311,158,752,698.99
  5. Step 5: Solve for x
    x = 311,158,752,698.99/821,220.71
  6. Step 6: Final answer
    x = 378,897.84

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1.5x scale

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.