Home / 812,216.78-1,120,814.75-444,622.81

Finding the Fourth Proportional to 812,216.78, 1,120,814.75 and 444,622.81

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Solution

The fourth proportional to 812,216.78, 1,120,814.75 and 444,622.81 is: 613,555.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,216.78 : 1,120,814.75 = 444,622.81 : x
  2. Step 2: Convert to fraction form
    812,216.78/1,120,814.75 = 444,622.81/x
  3. Step 3: Cross multiply
    812,216.78x = 1,120,814.75 × 444,622.81
  4. Step 4: Simplify right side
    812,216.78x = 498,339,803,634.45
  5. Step 5: Solve for x
    x = 498,339,803,634.45/812,216.78
  6. Step 6: Final answer
    x = 613,555.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.