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Finding the Fourth Proportional to 618,607,804.88, 853,709,416.18 and 383,734,141.62

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Solution

The fourth proportional to 618,607,804.88, 853,709,416.18 and 383,734,141.62 is: 529,572,125.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,607,804.88 : 853,709,416.18 = 383,734,141.62 : x
  2. Step 2: Convert to fraction form
    618,607,804.88/853,709,416.18 = 383,734,141.62/x
  3. Step 3: Cross multiply
    618,607,804.88x = 853,709,416.18 × 383,734,141.62
  4. Step 4: Simplify right side
    618,607,804.88x = 327,597,450,010,743,616
  5. Step 5: Solve for x
    x = 327,597,450,010,743,616/618,607,804.88
  6. Step 6: Final answer
    x = 529,572,125.39

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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.