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Finding the Fourth Proportional to 618,579.27, 853,476.99 and 376,970.45

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Solution

The fourth proportional to 618,579.27, 853,476.99 and 376,970.45 is: 520,120.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,579.27 : 853,476.99 = 376,970.45 : x
  2. Step 2: Convert to fraction form
    618,579.27/853,476.99 = 376,970.45/x
  3. Step 3: Cross multiply
    618,579.27x = 853,476.99 × 376,970.45
  4. Step 4: Simplify right side
    618,579.27x = 321,735,600,717.56
  5. Step 5: Solve for x
    x = 321,735,600,717.56/618,579.27
  6. Step 6: Final answer
    x = 520,120.24

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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.