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Finding the Fourth Proportional to 438,645.75, 656,471.62 and 367,648.54

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Solution

The fourth proportional to 438,645.75, 656,471.62 and 367,648.54 is: 550,218.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,645.75 : 656,471.62 = 367,648.54 : x
  2. Step 2: Convert to fraction form
    438,645.75/656,471.62 = 367,648.54/x
  3. Step 3: Cross multiply
    438,645.75x = 656,471.62 × 367,648.54
  4. Step 4: Simplify right side
    438,645.75x = 241,350,831,462.82
  5. Step 5: Solve for x
    x = 241,350,831,462.82/438,645.75
  6. Step 6: Final answer
    x = 550,218.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.