Home / 853,113.15-1,278,685.44-320,294.34

Finding the Fourth Proportional to 853,113.15, 1,278,685.44 and 320,294.34

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Solution

The fourth proportional to 853,113.15, 1,278,685.44 and 320,294.34 is: 480,071.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,113.15 : 1,278,685.44 = 320,294.34 : x
  2. Step 2: Convert to fraction form
    853,113.15/1,278,685.44 = 320,294.34/x
  3. Step 3: Cross multiply
    853,113.15x = 1,278,685.44 × 320,294.34
  4. Step 4: Simplify right side
    853,113.15x = 409,555,709,072.41
  5. Step 5: Solve for x
    x = 409,555,709,072.41/853,113.15
  6. Step 6: Final answer
    x = 480,071.97

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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.