Home / 1,383,887.19-1,909,765.08-772,039.92

Finding the Fourth Proportional to 1,383,887.19, 1,909,765.08 and 772,039.92

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Solution

The fourth proportional to 1,383,887.19, 1,909,765.08 and 772,039.92 is: 1,065,415.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,887.19 : 1,909,765.08 = 772,039.92 : x
  2. Step 2: Convert to fraction form
    1,383,887.19/1,909,765.08 = 772,039.92/x
  3. Step 3: Cross multiply
    1,383,887.19x = 1,909,765.08 × 772,039.92
  4. Step 4: Simplify right side
    1,383,887.19x = 1,474,414,879,581.99
  5. Step 5: Solve for x
    x = 1,474,414,879,581.99/1,383,887.19
  6. Step 6: Final answer
    x = 1,065,415.51

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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.