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Finding the Fourth Proportional to 618,960.74, 854,317.75 and 377,376.51

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Solution

The fourth proportional to 618,960.74, 854,317.75 and 377,376.51 is: 520,872.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,960.74 : 854,317.75 = 377,376.51 : x
  2. Step 2: Convert to fraction form
    618,960.74/854,317.75 = 377,376.51/x
  3. Step 3: Cross multiply
    618,960.74x = 854,317.75 × 377,376.51
  4. Step 4: Simplify right side
    618,960.74x = 322,399,450,926.05
  5. Step 5: Solve for x
    x = 322,399,450,926.05/618,960.74
  6. Step 6: Final answer
    x = 520,872.21

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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.