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Finding the Fourth Proportional to 618,298.23, 853,236.68 and 346,377.59

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Solution

The fourth proportional to 618,298.23, 853,236.68 and 346,377.59 is: 477,992.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,298.23 : 853,236.68 = 346,377.59 : x
  2. Step 2: Convert to fraction form
    618,298.23/853,236.68 = 346,377.59/x
  3. Step 3: Cross multiply
    618,298.23x = 853,236.68 × 346,377.59
  4. Step 4: Simplify right side
    618,298.23x = 295,542,058,919.93
  5. Step 5: Solve for x
    x = 295,542,058,919.93/618,298.23
  6. Step 6: Final answer
    x = 477,992.73

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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.