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Finding the Fourth Proportional to 618,958.98, 854,315.34 and 377,374.77

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Solution

The fourth proportional to 618,958.98, 854,315.34 and 377,374.77 is: 520,869.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,958.98 : 854,315.34 = 377,374.77 : x
  2. Step 2: Convert to fraction form
    618,958.98/854,315.34 = 377,374.77/x
  3. Step 3: Cross multiply
    618,958.98x = 854,315.34 × 377,374.77
  4. Step 4: Simplify right side
    618,958.98x = 322,397,054,939.97
  5. Step 5: Solve for x
    x = 322,397,054,939.97/618,958.98
  6. Step 6: Final answer
    x = 520,869.82

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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.