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Finding the Fourth Proportional to 660,505.40, 911,497.46 and 374,080.85

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Solution

The fourth proportional to 660,505.40, 911,497.46 and 374,080.85 is: 516,231.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,505.40 : 911,497.46 = 374,080.85 : x
  2. Step 2: Convert to fraction form
    660,505.40/911,497.46 = 374,080.85/x
  3. Step 3: Cross multiply
    660,505.40x = 911,497.46 × 374,080.85
  4. Step 4: Simplify right side
    660,505.40x = 340,973,738,181.75
  5. Step 5: Solve for x
    x = 340,973,738,181.75/660,505.40
  6. Step 6: Final answer
    x = 516,231.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.