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Finding the Fourth Proportional to 618,808.60, 853,791.24 and 357,097.60

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Solution

The fourth proportional to 618,808.60, 853,791.24 and 357,097.60 is: 492,699.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,808.60 : 853,791.24 = 357,097.60 : x
  2. Step 2: Convert to fraction form
    618,808.60/853,791.24 = 357,097.60/x
  3. Step 3: Cross multiply
    618,808.60x = 853,791.24 × 357,097.60
  4. Step 4: Simplify right side
    618,808.60x = 304,886,802,705.02
  5. Step 5: Solve for x
    x = 304,886,802,705.02/618,808.60
  6. Step 6: Final answer
    x = 492,699.69

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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.