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Finding the Fourth Proportional to 612,988.54, 919,473.56 and 275,791.08

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Solution

The fourth proportional to 612,988.54, 919,473.56 and 275,791.08 is: 413,682.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,988.54 : 919,473.56 = 275,791.08 : x
  2. Step 2: Convert to fraction form
    612,988.54/919,473.56 = 275,791.08/x
  3. Step 3: Cross multiply
    612,988.54x = 919,473.56 × 275,791.08
  4. Step 4: Simplify right side
    612,988.54x = 253,582,606,143.85
  5. Step 5: Solve for x
    x = 253,582,606,143.85/612,988.54
  6. Step 6: Final answer
    x = 413,682.46

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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.