Home / 1,981,500.30-2,972,250.45-1,272,912.30

Finding the Fourth Proportional to 1,981,500.30, 2,972,250.45 and 1,272,912.30

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Solution

The fourth proportional to 1,981,500.30, 2,972,250.45 and 1,272,912.30 is: 1,909,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,500.30 : 2,972,250.45 = 1,272,912.30 : x
  2. Step 2: Convert to fraction form
    1,981,500.30/2,972,250.45 = 1,272,912.30/x
  3. Step 3: Cross multiply
    1,981,500.30x = 2,972,250.45 × 1,272,912.30
  4. Step 4: Simplify right side
    1,981,500.30x = 3,783,414,156,485.54
  5. Step 5: Solve for x
    x = 3,783,414,156,485.54/1,981,500.30
  6. Step 6: Final answer
    x = 1,909,368.45

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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.