Home / 1,259,486.20-1,889,229.30-811,588.60

Finding the Fourth Proportional to 1,259,486.20, 1,889,229.30 and 811,588.60

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Solution

The fourth proportional to 1,259,486.20, 1,889,229.30 and 811,588.60 is: 1,217,382.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,486.20 : 1,889,229.30 = 811,588.60 : x
  2. Step 2: Convert to fraction form
    1,259,486.20/1,889,229.30 = 811,588.60/x
  3. Step 3: Cross multiply
    1,259,486.20x = 1,889,229.30 × 811,588.60
  4. Step 4: Simplify right side
    1,259,486.20x = 1,533,276,962,665.98
  5. Step 5: Solve for x
    x = 1,533,276,962,665.98/1,259,486.20
  6. Step 6: Final answer
    x = 1,217,382.90

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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.