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Finding the Fourth Proportional to 668,841.14, 922,939.44 and 396,862.04

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Solution

The fourth proportional to 668,841.14, 922,939.44 and 396,862.04 is: 547,633.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,841.14 : 922,939.44 = 396,862.04 : x
  2. Step 2: Convert to fraction form
    668,841.14/922,939.44 = 396,862.04/x
  3. Step 3: Cross multiply
    668,841.14x = 922,939.44 × 396,862.04
  4. Step 4: Simplify right side
    668,841.14x = 366,279,628,954.86
  5. Step 5: Solve for x
    x = 366,279,628,954.86/668,841.14
  6. Step 6: Final answer
    x = 547,633.22

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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.