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Finding the Fourth Proportional to 618,299.23, 853,238.05 and 346,378.59

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Solution

The fourth proportional to 618,299.23, 853,238.05 and 346,378.59 is: 477,994.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,299.23 : 853,238.05 = 346,378.59 : x
  2. Step 2: Convert to fraction form
    618,299.23/853,238.05 = 346,378.59/x
  3. Step 3: Cross multiply
    618,299.23x = 853,238.05 × 346,378.59
  4. Step 4: Simplify right side
    618,299.23x = 295,543,392,693.35
  5. Step 5: Solve for x
    x = 295,543,392,693.35/618,299.23
  6. Step 6: Final answer
    x = 477,994.11

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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.