Home / 811,127.28-1,216,502.19-305,739.12

Finding the Fourth Proportional to 811,127.28, 1,216,502.19 and 305,739.12

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Solution

The fourth proportional to 811,127.28, 1,216,502.19 and 305,739.12 is: 458,537.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,127.28 : 1,216,502.19 = 305,739.12 : x
  2. Step 2: Convert to fraction form
    811,127.28/1,216,502.19 = 305,739.12/x
  3. Step 3: Cross multiply
    811,127.28x = 1,216,502.19 × 305,739.12
  4. Step 4: Simplify right side
    811,127.28x = 371,932,309,048.67
  5. Step 5: Solve for x
    x = 371,932,309,048.67/811,127.28
  6. Step 6: Final answer
    x = 458,537.54

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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.