Home / 890,012.88-1,334,871.54-321,284.88

Finding the Fourth Proportional to 890,012.88, 1,334,871.54 and 321,284.88

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Solution

The fourth proportional to 890,012.88, 1,334,871.54 and 321,284.88 is: 481,873.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,012.88 : 1,334,871.54 = 321,284.88 : x
  2. Step 2: Convert to fraction form
    890,012.88/1,334,871.54 = 321,284.88/x
  3. Step 3: Cross multiply
    890,012.88x = 1,334,871.54 × 321,284.88
  4. Step 4: Simplify right side
    890,012.88x = 428,874,042,544.32
  5. Step 5: Solve for x
    x = 428,874,042,544.32/890,012.88
  6. Step 6: Final answer
    x = 481,873.97

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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.