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Finding the Fourth Proportional to 478,638.41, 660,521.01 and 263,778.48

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Solution

The fourth proportional to 478,638.41, 660,521.01 and 263,778.48 is: 364,014.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,638.41 : 660,521.01 = 263,778.48 : x
  2. Step 2: Convert to fraction form
    478,638.41/660,521.01 = 263,778.48/x
  3. Step 3: Cross multiply
    478,638.41x = 660,521.01 × 263,778.48
  4. Step 4: Simplify right side
    478,638.41x = 174,231,228,025.87
  5. Step 5: Solve for x
    x = 174,231,228,025.87/478,638.41
  6. Step 6: Final answer
    x = 364,014.31

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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.