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Finding the Fourth Proportional to 660,753.89, 911,811.16 and 374,268.23

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Solution

The fourth proportional to 660,753.89, 911,811.16 and 374,268.23 is: 516,473.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,753.89 : 911,811.16 = 374,268.23 : x
  2. Step 2: Convert to fraction form
    660,753.89/911,811.16 = 374,268.23/x
  3. Step 3: Cross multiply
    660,753.89x = 911,811.16 × 374,268.23
  4. Step 4: Simplify right side
    660,753.89x = 341,261,948,947.45
  5. Step 5: Solve for x
    x = 341,261,948,947.45/660,753.89
  6. Step 6: Final answer
    x = 516,473.61

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1.5x scale

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.