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Finding the Fourth Proportional to 1,981,750.48, 2,972,275.78 and 783,274.48

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Solution

The fourth proportional to 1,981,750.48, 2,972,275.78 and 783,274.48 is: 1,174,773.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,750.48 : 2,972,275.78 = 783,274.48 : x
  2. Step 2: Convert to fraction form
    1,981,750.48/2,972,275.78 = 783,274.48/x
  3. Step 3: Cross multiply
    1,981,750.48x = 2,972,275.78 × 783,274.48
  4. Step 4: Simplify right side
    1,981,750.48x = 2,328,107,765,996.09
  5. Step 5: Solve for x
    x = 2,328,107,765,996.09/1,981,750.48
  6. Step 6: Final answer
    x = 1,174,773.41

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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.