Home / 1,191,129.20-1,786,309.86-392,220.54

Finding the Fourth Proportional to 1,191,129.20, 1,786,309.86 and 392,220.54

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Solution

The fourth proportional to 1,191,129.20, 1,786,309.86 and 392,220.54 is: 588,204.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,129.20 : 1,786,309.86 = 392,220.54 : x
  2. Step 2: Convert to fraction form
    1,191,129.20/1,786,309.86 = 392,220.54/x
  3. Step 3: Cross multiply
    1,191,129.20x = 1,786,309.86 × 392,220.54
  4. Step 4: Simplify right side
    1,191,129.20x = 700,627,417,896.52
  5. Step 5: Solve for x
    x = 700,627,417,896.52/1,191,129.20
  6. Step 6: Final answer
    x = 588,204.38

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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.