Home / 2,129,641.80-3,194,462.70-1,289,833.80

Finding the Fourth Proportional to 2,129,641.80, 3,194,462.70 and 1,289,833.80

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Solution

The fourth proportional to 2,129,641.80, 3,194,462.70 and 1,289,833.80 is: 1,934,750.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,641.80 : 3,194,462.70 = 1,289,833.80 : x
  2. Step 2: Convert to fraction form
    2,129,641.80/3,194,462.70 = 1,289,833.80/x
  3. Step 3: Cross multiply
    2,129,641.80x = 3,194,462.70 × 1,289,833.80
  4. Step 4: Simplify right side
    2,129,641.80x = 4,120,325,963,299.26
  5. Step 5: Solve for x
    x = 4,120,325,963,299.26/2,129,641.80
  6. Step 6: Final answer
    x = 1,934,750.70

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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.