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Finding the Fourth Proportional to 638,480.90, 881,093.14 and 352,027.64

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Solution

The fourth proportional to 638,480.90, 881,093.14 and 352,027.64 is: 485,792.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,480.90 : 881,093.14 = 352,027.64 : x
  2. Step 2: Convert to fraction form
    638,480.90/881,093.14 = 352,027.64/x
  3. Step 3: Cross multiply
    638,480.90x = 881,093.14 × 352,027.64
  4. Step 4: Simplify right side
    638,480.90x = 310,169,133,408.86
  5. Step 5: Solve for x
    x = 310,169,133,408.86/638,480.90
  6. Step 6: Final answer
    x = 485,792.35

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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.