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Finding the Fourth Proportional to 478,783.68, 660,691.80 and 263,912.64

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Solution

The fourth proportional to 478,783.68, 660,691.80 and 263,912.64 is: 364,183.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,783.68 : 660,691.80 = 263,912.64 : x
  2. Step 2: Convert to fraction form
    478,783.68/660,691.80 = 263,912.64/x
  3. Step 3: Cross multiply
    478,783.68x = 660,691.80 × 263,912.64
  4. Step 4: Simplify right side
    478,783.68x = 174,364,917,164.35
  5. Step 5: Solve for x
    x = 174,364,917,164.35/478,783.68
  6. Step 6: Final answer
    x = 364,183.08

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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.