Home / 1,181,127.20-1,771,690.80-820,320.80

Finding the Fourth Proportional to 1,181,127.20, 1,771,690.80 and 820,320.80

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Solution

The fourth proportional to 1,181,127.20, 1,771,690.80 and 820,320.80 is: 1,230,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181,127.20 : 1,771,690.80 = 820,320.80 : x
  2. Step 2: Convert to fraction form
    1,181,127.20/1,771,690.80 = 820,320.80/x
  3. Step 3: Cross multiply
    1,181,127.20x = 1,771,690.80 × 820,320.80
  4. Step 4: Simplify right side
    1,181,127.20x = 1,453,354,814,408.64
  5. Step 5: Solve for x
    x = 1,453,354,814,408.64/1,181,127.20
  6. Step 6: Final answer
    x = 1,230,481.20

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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.