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Finding the Fourth Proportional to 611,808.72, 844,296.94 and 339,869.22

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Solution

The fourth proportional to 611,808.72, 844,296.94 and 339,869.22 is: 469,020.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,808.72 : 844,296.94 = 339,869.22 : x
  2. Step 2: Convert to fraction form
    611,808.72/844,296.94 = 339,869.22/x
  3. Step 3: Cross multiply
    611,808.72x = 844,296.94 × 339,869.22
  4. Step 4: Simplify right side
    611,808.72x = 286,950,542,446.19
  5. Step 5: Solve for x
    x = 286,950,542,446.19/611,808.72
  6. Step 6: Final answer
    x = 469,020.03

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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.