Home / 1,327,987.92-1,991,128.20-872,040.45

Finding the Fourth Proportional to 1,327,987.92, 1,991,128.20 and 872,040.45

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Solution

The fourth proportional to 1,327,987.92, 1,991,128.20 and 872,040.45 is: 1,307,500.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,987.92 : 1,991,128.20 = 872,040.45 : x
  2. Step 2: Convert to fraction form
    1,327,987.92/1,991,128.20 = 872,040.45/x
  3. Step 3: Cross multiply
    1,327,987.92x = 1,991,128.20 × 872,040.45
  4. Step 4: Simplify right side
    1,327,987.92x = 1,736,344,331,535.69
  5. Step 5: Solve for x
    x = 1,736,344,331,535.69/1,327,987.92
  6. Step 6: Final answer
    x = 1,307,500.09

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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.