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Finding the Fourth Proportional to 611,463.34, 843,791.25 and 339,548.56

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Solution

The fourth proportional to 611,463.34, 843,791.25 and 339,548.56 is: 468,561.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,463.34 : 843,791.25 = 339,548.56 : x
  2. Step 2: Convert to fraction form
    611,463.34/843,791.25 = 339,548.56/x
  3. Step 3: Cross multiply
    611,463.34x = 843,791.25 × 339,548.56
  4. Step 4: Simplify right side
    611,463.34x = 286,508,103,878.10
  5. Step 5: Solve for x
    x = 286,508,103,878.10/611,463.34
  6. Step 6: Final answer
    x = 468,561.38

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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.