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Finding the Fourth Proportional to 668,601.33, 922,445.46 and 381,918.45

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Solution

The fourth proportional to 668,601.33, 922,445.46 and 381,918.45 is: 526,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,601.33 : 922,445.46 = 381,918.45 : x
  2. Step 2: Convert to fraction form
    668,601.33/922,445.46 = 381,918.45/x
  3. Step 3: Cross multiply
    668,601.33x = 922,445.46 × 381,918.45
  4. Step 4: Simplify right side
    668,601.33x = 352,298,940,292.74
  5. Step 5: Solve for x
    x = 352,298,940,292.74/668,601.33
  6. Step 6: Final answer
    x = 526,919.29

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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.