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Finding the Fourth Proportional to 618,538.35, 853,568.47 and 363,905.93

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Solution

The fourth proportional to 618,538.35, 853,568.47 and 363,905.93 is: 502,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,538.35 : 853,568.47 = 363,905.93 : x
  2. Step 2: Convert to fraction form
    618,538.35/853,568.47 = 363,905.93/x
  3. Step 3: Cross multiply
    618,538.35x = 853,568.47 × 363,905.93
  4. Step 4: Simplify right side
    618,538.35x = 310,618,626,074.50
  5. Step 5: Solve for x
    x = 310,618,626,074.50/618,538.35
  6. Step 6: Final answer
    x = 502,181.68

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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.