Home / 812,484.54-1,121,150.43-485,732.97

Finding the Fourth Proportional to 812,484.54, 1,121,150.43 and 485,732.97

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Solution

The fourth proportional to 812,484.54, 1,121,150.43 and 485,732.97 is: 670,264.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,484.54 : 1,121,150.43 = 485,732.97 : x
  2. Step 2: Convert to fraction form
    812,484.54/1,121,150.43 = 485,732.97/x
  3. Step 3: Cross multiply
    812,484.54x = 1,121,150.43 × 485,732.97
  4. Step 4: Simplify right side
    812,484.54x = 544,579,728,180.68
  5. Step 5: Solve for x
    x = 544,579,728,180.68/812,484.54
  6. Step 6: Final answer
    x = 670,264.73

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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.