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Finding the Fourth Proportional to 618,333.68, 853,255.94 and 346,355.58

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Solution

The fourth proportional to 618,333.68, 853,255.94 and 346,355.58 is: 477,945.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,333.68 : 853,255.94 = 346,355.58 : x
  2. Step 2: Convert to fraction form
    618,333.68/853,255.94 = 346,355.58/x
  3. Step 3: Cross multiply
    618,333.68x = 853,255.94 × 346,355.58
  4. Step 4: Simplify right side
    618,333.68x = 295,529,955,987.15
  5. Step 5: Solve for x
    x = 295,529,955,987.15/618,333.68
  6. Step 6: Final answer
    x = 477,945.75

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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.