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Finding the Fourth Proportional to 521,486.44, 719,651.58 and 283,022.44

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Solution

The fourth proportional to 521,486.44, 719,651.58 and 283,022.44 is: 390,571.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,486.44 : 719,651.58 = 283,022.44 : x
  2. Step 2: Convert to fraction form
    521,486.44/719,651.58 = 283,022.44/x
  3. Step 3: Cross multiply
    521,486.44x = 719,651.58 × 283,022.44
  4. Step 4: Simplify right side
    521,486.44x = 203,677,546,121.46
  5. Step 5: Solve for x
    x = 203,677,546,121.46/521,486.44
  6. Step 6: Final answer
    x = 390,571.13

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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.