Home / 308,515,942.54-462,776,625.69-78,485,270.50

Finding the Fourth Proportional to 308,515,942.54, 462,776,625.69 and 78,485,270.50

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Solution

The fourth proportional to 308,515,942.54, 462,776,625.69 and 78,485,270.50 is: 117,728,595.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,515,942.54 : 462,776,625.69 = 78,485,270.50 : x
  2. Step 2: Convert to fraction form
    308,515,942.54/462,776,625.69 = 78,485,270.50/x
  3. Step 3: Cross multiply
    308,515,942.54x = 462,776,625.69 × 78,485,270.50
  4. Step 4: Simplify right side
    308,515,942.54x = 36,321,148,648,356,896
  5. Step 5: Solve for x
    x = 36,321,148,648,356,896/308,515,942.54
  6. Step 6: Final answer
    x = 117,728,595.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.