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Finding the Fourth Proportional to 618,372.69, 853,160.63 and 346,403.85

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Solution

The fourth proportional to 618,372.69, 853,160.63 and 346,403.85 is: 477,928.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,372.69 : 853,160.63 = 346,403.85 : x
  2. Step 2: Convert to fraction form
    618,372.69/853,160.63 = 346,403.85/x
  3. Step 3: Cross multiply
    618,372.69x = 853,160.63 × 346,403.85
  4. Step 4: Simplify right side
    618,372.69x = 295,538,125,168.41
  5. Step 5: Solve for x
    x = 295,538,125,168.41/618,372.69
  6. Step 6: Final answer
    x = 477,928.81

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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.