Home / 811,237.28-1,215,997.86-305,579.48

Finding the Fourth Proportional to 811,237.28, 1,215,997.86 and 305,579.48

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Solution

The fourth proportional to 811,237.28, 1,215,997.86 and 305,579.48 is: 458,046.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,237.28 : 1,215,997.86 = 305,579.48 : x
  2. Step 2: Convert to fraction form
    811,237.28/1,215,997.86 = 305,579.48/x
  3. Step 3: Cross multiply
    811,237.28x = 1,215,997.86 × 305,579.48
  4. Step 4: Simplify right side
    811,237.28x = 371,583,993,739.91
  5. Step 5: Solve for x
    x = 371,583,993,739.91/811,237.28
  6. Step 6: Final answer
    x = 458,046.00

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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.