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Finding the Fourth Proportional to 611,089.92, 843,291.41 and 339,142.01

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Solution

The fourth proportional to 611,089.92, 843,291.41 and 339,142.01 is: 468,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,089.92 : 843,291.41 = 339,142.01 : x
  2. Step 2: Convert to fraction form
    611,089.92/843,291.41 = 339,142.01/x
  3. Step 3: Cross multiply
    611,089.92x = 843,291.41 × 339,142.01
  4. Step 4: Simplify right side
    611,089.92x = 285,995,537,890.97
  5. Step 5: Solve for x
    x = 285,995,537,890.97/611,089.92
  6. Step 6: Final answer
    x = 468,008.93

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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.