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Finding the Fourth Proportional to 866,843.10, 1,300,268.70 and 305,877.60

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Solution

The fourth proportional to 866,843.10, 1,300,268.70 and 305,877.60 is: 458,817.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,843.10 : 1,300,268.70 = 305,877.60 : x
  2. Step 2: Convert to fraction form
    866,843.10/1,300,268.70 = 305,877.60/x
  3. Step 3: Cross multiply
    866,843.10x = 1,300,268.70 × 305,877.60
  4. Step 4: Simplify right side
    866,843.10x = 397,723,069,311.12
  5. Step 5: Solve for x
    x = 397,723,069,311.12/866,843.10
  6. Step 6: Final answer
    x = 458,817.83

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1.5x scale

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.