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Finding the Fourth Proportional to 814,797, 1,222,228.62 and 388,113.48

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Solution

The fourth proportional to 814,797, 1,222,228.62 and 388,113.48 is: 582,186.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,797 : 1,222,228.62 = 388,113.48 : x
  2. Step 2: Convert to fraction form
    814,797/1,222,228.62 = 388,113.48/x
  3. Step 3: Cross multiply
    814,797x = 1,222,228.62 × 388,113.48
  4. Step 4: Simplify right side
    814,797x = 474,363,403,063.80
  5. Step 5: Solve for x
    x = 474,363,403,063.80/814,797
  6. Step 6: Final answer
    x = 582,186.00

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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.