Home / 821,830.40-1,233,091.20-448,121.60

Finding the Fourth Proportional to 821,830.40, 1,233,091.20 and 448,121.60

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Solution

The fourth proportional to 821,830.40, 1,233,091.20 and 448,121.60 is: 672,370.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,830.40 : 1,233,091.20 = 448,121.60 : x
  2. Step 2: Convert to fraction form
    821,830.40/1,233,091.20 = 448,121.60/x
  3. Step 3: Cross multiply
    821,830.40x = 1,233,091.20 × 448,121.60
  4. Step 4: Simplify right side
    821,830.40x = 552,574,801,489.92
  5. Step 5: Solve for x
    x = 552,574,801,489.92/821,830.40
  6. Step 6: Final answer
    x = 672,370.85

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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.