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Finding the Fourth Proportional to 554,327.88, 764,972.28 and 299,679

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Solution

The fourth proportional to 554,327.88, 764,972.28 and 299,679 is: 413,556.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,327.88 : 764,972.28 = 299,679 : x
  2. Step 2: Convert to fraction form
    554,327.88/764,972.28 = 299,679/x
  3. Step 3: Cross multiply
    554,327.88x = 764,972.28 × 299,679
  4. Step 4: Simplify right side
    554,327.88x = 229,246,127,898.12
  5. Step 5: Solve for x
    x = 229,246,127,898.12/554,327.88
  6. Step 6: Final answer
    x = 413,556.91

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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.