Home / 1,383,967.77-1,909,832.22-811,389.30

Finding the Fourth Proportional to 1,383,967.77, 1,909,832.22 and 811,389.30

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Solution

The fourth proportional to 1,383,967.77, 1,909,832.22 and 811,389.30 is: 1,119,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,967.77 : 1,909,832.22 = 811,389.30 : x
  2. Step 2: Convert to fraction form
    1,383,967.77/1,909,832.22 = 811,389.30/x
  3. Step 3: Cross multiply
    1,383,967.77x = 1,909,832.22 × 811,389.30
  4. Step 4: Simplify right side
    1,383,967.77x = 1,549,617,428,103.25
  5. Step 5: Solve for x
    x = 1,549,617,428,103.25/1,383,967.77
  6. Step 6: Final answer
    x = 1,119,691.85

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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.