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Finding the Fourth Proportional to 660,551.73, 911,617.61 and 374,122.77

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Solution

The fourth proportional to 660,551.73, 911,617.61 and 374,122.77 is: 516,321.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,551.73 : 911,617.61 = 374,122.77 : x
  2. Step 2: Convert to fraction form
    660,551.73/911,617.61 = 374,122.77/x
  3. Step 3: Cross multiply
    660,551.73x = 911,617.61 × 374,122.77
  4. Step 4: Simplify right side
    660,551.73x = 341,056,905,433.98
  5. Step 5: Solve for x
    x = 341,056,905,433.98/660,551.73
  6. Step 6: Final answer
    x = 516,321.27

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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.