Home / 1,383,999.36-1,909,944-811,201.92

Finding the Fourth Proportional to 1,383,999.36, 1,909,944 and 811,201.92

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Solution

The fourth proportional to 1,383,999.36, 1,909,944 and 811,201.92 is: 1,119,473.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,999.36 : 1,909,944 = 811,201.92 : x
  2. Step 2: Convert to fraction form
    1,383,999.36/1,909,944 = 811,201.92/x
  3. Step 3: Cross multiply
    1,383,999.36x = 1,909,944 × 811,201.92
  4. Step 4: Simplify right side
    1,383,999.36x = 1,549,350,239,892.48
  5. Step 5: Solve for x
    x = 1,549,350,239,892.48/1,383,999.36
  6. Step 6: Final answer
    x = 1,119,473.23

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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.