Home / 1,260,855.60-1,891,542.60-420,010.80

Finding the Fourth Proportional to 1,260,855.60, 1,891,542.60 and 420,010.80

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Solution

The fourth proportional to 1,260,855.60, 1,891,542.60 and 420,010.80 is: 630,102.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,855.60 : 1,891,542.60 = 420,010.80 : x
  2. Step 2: Convert to fraction form
    1,260,855.60/1,891,542.60 = 420,010.80/x
  3. Step 3: Cross multiply
    1,260,855.60x = 1,891,542.60 × 420,010.80
  4. Step 4: Simplify right side
    1,260,855.60x = 794,468,320,660.08
  5. Step 5: Solve for x
    x = 794,468,320,660.08/1,260,855.60
  6. Step 6: Final answer
    x = 630,102.54

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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.