Home / 12,978,937,888.20-19,467,821,804.36-5,412,606,880.68

Finding the Fourth Proportional to 12,978,937,888.20, 19,467,821,804.36 and 5,412,606,880.68

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Solution

The fourth proportional to 12,978,937,888.20, 19,467,821,804.36 and 5,412,606,880.68 is: 8,118,666,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,978,937,888.20 : 19,467,821,804.36 = 5,412,606,880.68 : x
  2. Step 2: Convert to fraction form
    12,978,937,888.20/19,467,821,804.36 = 5,412,606,880.68/x
  3. Step 3: Cross multiply
    12,978,937,888.20x = 19,467,821,804.36 × 5,412,606,880.68
  4. Step 4: Simplify right side
    12,978,937,888.20x = 105,371,666,250,131,079,168
  5. Step 5: Solve for x
    x = 105,371,666,250,131,079,168/12,978,937,888.20
  6. Step 6: Final answer
    x = 8,118,666,346.80

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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.