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Finding the Fourth Proportional to 835,759.31, 1,153,449.85 and 491,578.81

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Solution

The fourth proportional to 835,759.31, 1,153,449.85 and 491,578.81 is: 678,438.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,759.31 : 1,153,449.85 = 491,578.81 : x
  2. Step 2: Convert to fraction form
    835,759.31/1,153,449.85 = 491,578.81/x
  3. Step 3: Cross multiply
    835,759.31x = 1,153,449.85 × 491,578.81
  4. Step 4: Simplify right side
    835,759.31x = 567,011,504,657.68
  5. Step 5: Solve for x
    x = 567,011,504,657.68/835,759.31
  6. Step 6: Final answer
    x = 678,438.75

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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.