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Finding the Fourth Proportional to 1,181,074.76, 1,629,864.77 and 664,827.54

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Solution

The fourth proportional to 1,181,074.76, 1,629,864.77 and 664,827.54 is: 917,451.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181,074.76 : 1,629,864.77 = 664,827.54 : x
  2. Step 2: Convert to fraction form
    1,181,074.76/1,629,864.77 = 664,827.54/x
  3. Step 3: Cross multiply
    1,181,074.76x = 1,629,864.77 × 664,827.54
  4. Step 4: Simplify right side
    1,181,074.76x = 1,083,578,982,247.63
  5. Step 5: Solve for x
    x = 1,083,578,982,247.63/1,181,074.76
  6. Step 6: Final answer
    x = 917,451.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.