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Finding the Fourth Proportional to 618,297.23, 853,235.30 and 346,376.58

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Solution

The fourth proportional to 618,297.23, 853,235.30 and 346,376.58 is: 477,991.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,297.23 : 853,235.30 = 346,376.58 : x
  2. Step 2: Convert to fraction form
    618,297.23/853,235.30 = 346,376.58/x
  3. Step 3: Cross multiply
    618,297.23x = 853,235.30 × 346,376.58
  4. Step 4: Simplify right side
    618,297.23x = 295,540,725,149.27
  5. Step 5: Solve for x
    x = 295,540,725,149.27/618,297.23
  6. Step 6: Final answer
    x = 477,991.35

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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.