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Finding the Fourth Proportional to 478,582.11, 660,447.74 and 263,729.86

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Solution

The fourth proportional to 478,582.11, 660,447.74 and 263,729.86 is: 363,949.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,582.11 : 660,447.74 = 263,729.86 : x
  2. Step 2: Convert to fraction form
    478,582.11/660,447.74 = 263,729.86/x
  3. Step 3: Cross multiply
    478,582.11x = 660,447.74 × 263,729.86
  4. Step 4: Simplify right side
    478,582.11x = 174,179,790,007.52
  5. Step 5: Solve for x
    x = 174,179,790,007.52/478,582.11
  6. Step 6: Final answer
    x = 363,949.65

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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.