Home / 853,828.80-1,280,743.20-821,169.60

Finding the Fourth Proportional to 853,828.80, 1,280,743.20 and 821,169.60

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Solution

The fourth proportional to 853,828.80, 1,280,743.20 and 821,169.60 is: 1,231,754.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,828.80 : 1,280,743.20 = 821,169.60 : x
  2. Step 2: Convert to fraction form
    853,828.80/1,280,743.20 = 821,169.60/x
  3. Step 3: Cross multiply
    853,828.80x = 1,280,743.20 × 821,169.60
  4. Step 4: Simplify right side
    853,828.80x = 1,051,707,381,246.72
  5. Step 5: Solve for x
    x = 1,051,707,381,246.72/853,828.80
  6. Step 6: Final answer
    x = 1,231,754.40

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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.