Home / 853,118.75-1,278,693.98-320,299.94

Finding the Fourth Proportional to 853,118.75, 1,278,693.98 and 320,299.94

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Solution

The fourth proportional to 853,118.75, 1,278,693.98 and 320,299.94 is: 480,080.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,118.75 : 1,278,693.98 = 320,299.94 : x
  2. Step 2: Convert to fraction form
    853,118.75/1,278,693.98 = 320,299.94/x
  3. Step 3: Cross multiply
    853,118.75x = 1,278,693.98 × 320,299.94
  4. Step 4: Simplify right side
    853,118.75x = 409,565,607,868.72
  5. Step 5: Solve for x
    x = 409,565,607,868.72/853,118.75
  6. Step 6: Final answer
    x = 480,080.42

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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.