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Finding the Fourth Proportional to 611,089.54, 843,290.88 and 339,141.64

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Solution

The fourth proportional to 611,089.54, 843,290.88 and 339,141.64 is: 468,008.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,089.54 : 843,290.88 = 339,141.64 : x
  2. Step 2: Convert to fraction form
    611,089.54/843,290.88 = 339,141.64/x
  3. Step 3: Cross multiply
    611,089.54x = 843,290.88 × 339,141.64
  4. Step 4: Simplify right side
    611,089.54x = 285,995,052,040.24
  5. Step 5: Solve for x
    x = 285,995,052,040.24/611,089.54
  6. Step 6: Final answer
    x = 468,008.42

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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.