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Finding the Fourth Proportional to 478,821, 660,774.96 and 263,956.32

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Solution

The fourth proportional to 478,821, 660,774.96 and 263,956.32 is: 364,260.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,821 : 660,774.96 = 263,956.32 : x
  2. Step 2: Convert to fraction form
    478,821/660,774.96 = 263,956.32/x
  3. Step 3: Cross multiply
    478,821x = 660,774.96 × 263,956.32
  4. Step 4: Simplify right side
    478,821x = 174,415,726,789.75
  5. Step 5: Solve for x
    x = 174,415,726,789.75/478,821
  6. Step 6: Final answer
    x = 364,260.81

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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.