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Finding the Fourth Proportional to 660,438.26, 911,408.37 and 374,014.16

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Solution

The fourth proportional to 660,438.26, 911,408.37 and 374,014.16 is: 516,141.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,438.26 : 911,408.37 = 374,014.16 : x
  2. Step 2: Convert to fraction form
    660,438.26/911,408.37 = 374,014.16/x
  3. Step 3: Cross multiply
    660,438.26x = 911,408.37 × 374,014.16
  4. Step 4: Simplify right side
    660,438.26x = 340,879,631,365.48
  5. Step 5: Solve for x
    x = 340,879,631,365.48/660,438.26
  6. Step 6: Final answer
    x = 516,141.56

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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.