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Finding the Fourth Proportional to 478,777.68, 660,683.52 and 263,906.64

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Solution

The fourth proportional to 478,777.68, 660,683.52 and 263,906.64 is: 364,174.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,777.68 : 660,683.52 = 263,906.64 : x
  2. Step 2: Convert to fraction form
    478,777.68/660,683.52 = 263,906.64/x
  3. Step 3: Cross multiply
    478,777.68x = 660,683.52 × 263,906.64
  4. Step 4: Simplify right side
    478,777.68x = 174,358,767,866.57
  5. Step 5: Solve for x
    x = 174,358,767,866.57/478,777.68
  6. Step 6: Final answer
    x = 364,174.80

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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.