Home / 685,054,137.84-945,374,709.42-371,788,351.80

Finding the Fourth Proportional to 685,054,137.84, 945,374,709.42 and 371,788,351.80

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Solution

The fourth proportional to 685,054,137.84, 945,374,709.42 and 371,788,351.80 is: 513,067,925.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,054,137.84 : 945,374,709.42 = 371,788,351.80 : x
  2. Step 2: Convert to fraction form
    685,054,137.84/945,374,709.42 = 371,788,351.80/x
  3. Step 3: Cross multiply
    685,054,137.84x = 945,374,709.42 × 371,788,351.80
  4. Step 4: Simplify right side
    685,054,137.84x = 351,479,305,048,665,728
  5. Step 5: Solve for x
    x = 351,479,305,048,665,728/685,054,137.84
  6. Step 6: Final answer
    x = 513,067,925.05

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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.