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Finding the Fourth Proportional to 618,431.52, 853,466.31 and 376,675.41

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Solution

The fourth proportional to 618,431.52, 853,466.31 and 376,675.41 is: 519,830.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,431.52 : 853,466.31 = 376,675.41 : x
  2. Step 2: Convert to fraction form
    618,431.52/853,466.31 = 376,675.41/x
  3. Step 3: Cross multiply
    618,431.52x = 853,466.31 × 376,675.41
  4. Step 4: Simplify right side
    618,431.52x = 321,479,772,240.44
  5. Step 5: Solve for x
    x = 321,479,772,240.44/618,431.52
  6. Step 6: Final answer
    x = 519,830.83

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1.5x scale

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.