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Finding the Fourth Proportional to 1,781,845.48, 2,673,562.94 and 821,784.88

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Solution

The fourth proportional to 1,781,845.48, 2,673,562.94 and 821,784.88 is: 1,233,043.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781,845.48 : 2,673,562.94 = 821,784.88 : x
  2. Step 2: Convert to fraction form
    1,781,845.48/2,673,562.94 = 821,784.88/x
  3. Step 3: Cross multiply
    1,781,845.48x = 2,673,562.94 × 821,784.88
  4. Step 4: Simplify right side
    1,781,845.48x = 2,197,093,599,820.35
  5. Step 5: Solve for x
    x = 2,197,093,599,820.35/1,781,845.48
  6. Step 6: Final answer
    x = 1,233,043.84

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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.