Home / 693,785.43-957,719.02-421,940.64

Finding the Fourth Proportional to 693,785.43, 957,719.02 and 421,940.64

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Solution

The fourth proportional to 693,785.43, 957,719.02 and 421,940.64 is: 582,457.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,785.43 : 957,719.02 = 421,940.64 : x
  2. Step 2: Convert to fraction form
    693,785.43/957,719.02 = 421,940.64/x
  3. Step 3: Cross multiply
    693,785.43x = 957,719.02 × 421,940.64
  4. Step 4: Simplify right side
    693,785.43x = 404,100,576,238.97
  5. Step 5: Solve for x
    x = 404,100,576,238.97/693,785.43
  6. Step 6: Final answer
    x = 582,457.57

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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.