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Finding the Fourth Proportional to 618,558.08, 853,022.40 and 403,629.44

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Solution

The fourth proportional to 618,558.08, 853,022.40 and 403,629.44 is: 556,625.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,558.08 : 853,022.40 = 403,629.44 : x
  2. Step 2: Convert to fraction form
    618,558.08/853,022.40 = 403,629.44/x
  3. Step 3: Cross multiply
    618,558.08x = 853,022.40 × 403,629.44
  4. Step 4: Simplify right side
    618,558.08x = 344,304,953,619.46
  5. Step 5: Solve for x
    x = 344,304,953,619.46/618,558.08
  6. Step 6: Final answer
    x = 556,625.10

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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.