Home / 1,078,170.80-1,616,964.60-320,010.80

Finding the Fourth Proportional to 1,078,170.80, 1,616,964.60 and 320,010.80

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Solution

The fourth proportional to 1,078,170.80, 1,616,964.60 and 320,010.80 is: 479,929.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,170.80 : 1,616,964.60 = 320,010.80 : x
  2. Step 2: Convert to fraction form
    1,078,170.80/1,616,964.60 = 320,010.80/x
  3. Step 3: Cross multiply
    1,078,170.80x = 1,616,964.60 × 320,010.80
  4. Step 4: Simplify right side
    1,078,170.80x = 517,446,135,217.68
  5. Step 5: Solve for x
    x = 517,446,135,217.68/1,078,170.80
  6. Step 6: Final answer
    x = 479,929.65

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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.