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Finding the Fourth Proportional to 866,759.68, 1,299,906.56 and 305,720.32

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Solution

The fourth proportional to 866,759.68, 1,299,906.56 and 305,720.32 is: 458,498.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,759.68 : 1,299,906.56 = 305,720.32 : x
  2. Step 2: Convert to fraction form
    866,759.68/1,299,906.56 = 305,720.32/x
  3. Step 3: Cross multiply
    866,759.68x = 1,299,906.56 × 305,720.32
  4. Step 4: Simplify right side
    866,759.68x = 397,407,849,493.30
  5. Step 5: Solve for x
    x = 397,407,849,493.30/866,759.68
  6. Step 6: Final answer
    x = 458,498.31

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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.