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Finding the Fourth Proportional to 618,843, 854,003.34 and 350,571

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Solution

The fourth proportional to 618,843, 854,003.34 and 350,571 is: 483,787.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,843 : 854,003.34 = 350,571 : x
  2. Step 2: Convert to fraction form
    618,843/854,003.34 = 350,571/x
  3. Step 3: Cross multiply
    618,843x = 854,003.34 × 350,571
  4. Step 4: Simplify right side
    618,843x = 299,388,804,907.14
  5. Step 5: Solve for x
    x = 299,388,804,907.14/618,843
  6. Step 6: Final answer
    x = 483,787.98

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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.