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Finding the Fourth Proportional to 611,571.02, 843,996.02 and 339,640.11

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Solution

The fourth proportional to 611,571.02, 843,996.02 and 339,640.11 is: 468,718.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,571.02 : 843,996.02 = 339,640.11 : x
  2. Step 2: Convert to fraction form
    611,571.02/843,996.02 = 339,640.11/x
  3. Step 3: Cross multiply
    611,571.02x = 843,996.02 × 339,640.11
  4. Step 4: Simplify right side
    611,571.02x = 286,654,899,374.16
  5. Step 5: Solve for x
    x = 286,654,899,374.16/611,571.02
  6. Step 6: Final answer
    x = 468,718.91

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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.