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Finding the Fourth Proportional to 618,965.25, 854,129.27 and 343,297.09

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Solution

The fourth proportional to 618,965.25, 854,129.27 and 343,297.09 is: 473,726.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,965.25 : 854,129.27 = 343,297.09 : x
  2. Step 2: Convert to fraction form
    618,965.25/854,129.27 = 343,297.09/x
  3. Step 3: Cross multiply
    618,965.25x = 854,129.27 × 343,297.09
  4. Step 4: Simplify right side
    618,965.25x = 293,220,086,887.69
  5. Step 5: Solve for x
    x = 293,220,086,887.69/618,965.25
  6. Step 6: Final answer
    x = 473,726.25

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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.