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Finding the Fourth Proportional to 478,612.75, 660,489.93 and 263,760.52

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Solution

The fourth proportional to 478,612.75, 660,489.93 and 263,760.52 is: 363,991.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,612.75 : 660,489.93 = 263,760.52 : x
  2. Step 2: Convert to fraction form
    478,612.75/660,489.93 = 263,760.52/x
  3. Step 3: Cross multiply
    478,612.75x = 660,489.93 × 263,760.52
  4. Step 4: Simplify right side
    478,612.75x = 174,211,167,391.56
  5. Step 5: Solve for x
    x = 174,211,167,391.56/478,612.75
  6. Step 6: Final answer
    x = 363,991.91

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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.