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Finding the Fourth Proportional to 611,706.40, 844,126.26 and 339,791.80

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Solution

The fourth proportional to 611,706.40, 844,126.26 and 339,791.80 is: 468,896.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,706.40 : 844,126.26 = 339,791.80 : x
  2. Step 2: Convert to fraction form
    611,706.40/844,126.26 = 339,791.80/x
  3. Step 3: Cross multiply
    611,706.40x = 844,126.26 × 339,791.80
  4. Step 4: Simplify right side
    611,706.40x = 286,827,181,312.67
  5. Step 5: Solve for x
    x = 286,827,181,312.67/611,706.40
  6. Step 6: Final answer
    x = 468,896.81

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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.