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Finding the Fourth Proportional to 611,507.75, 843,852.47 and 339,592.97

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Solution

The fourth proportional to 611,507.75, 843,852.47 and 339,592.97 is: 468,622.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,507.75 : 843,852.47 = 339,592.97 : x
  2. Step 2: Convert to fraction form
    611,507.75/843,852.47 = 339,592.97/x
  3. Step 3: Cross multiply
    611,507.75x = 843,852.47 × 339,592.97
  4. Step 4: Simplify right side
    611,507.75x = 286,566,366,940.80
  5. Step 5: Solve for x
    x = 286,566,366,940.80/611,507.75
  6. Step 6: Final answer
    x = 468,622.63

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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.