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Finding the Fourth Proportional to 531,808.78, 797,947.31 and 279,028.32

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Solution

The fourth proportional to 531,808.78, 797,947.31 and 279,028.32 is: 418,665.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,808.78 : 797,947.31 = 279,028.32 : x
  2. Step 2: Convert to fraction form
    531,808.78/797,947.31 = 279,028.32/x
  3. Step 3: Cross multiply
    531,808.78x = 797,947.31 × 279,028.32
  4. Step 4: Simplify right side
    531,808.78x = 222,649,896,522.55
  5. Step 5: Solve for x
    x = 222,649,896,522.55/531,808.78
  6. Step 6: Final answer
    x = 418,665.32

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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.