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Finding the Fourth Proportional to 618,352,644.36, 853,317,085.32 and 339,888,184.32

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Solution

The fourth proportional to 618,352,644.36, 853,317,085.32 and 339,888,184.32 is: 469,040,437.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,352,644.36 : 853,317,085.32 = 339,888,184.32 : x
  2. Step 2: Convert to fraction form
    618,352,644.36/853,317,085.32 = 339,888,184.32/x
  3. Step 3: Cross multiply
    618,352,644.36x = 853,317,085.32 × 339,888,184.32
  4. Step 4: Simplify right side
    618,352,644.36x = 290,032,394,778,649,344
  5. Step 5: Solve for x
    x = 290,032,394,778,649,344/618,352,644.36
  6. Step 6: Final answer
    x = 469,040,437.40

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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.