Home / 12,978,937,889.70-19,467,821,806.61-5,412,606,882.18

Finding the Fourth Proportional to 12,978,937,889.70, 19,467,821,806.61 and 5,412,606,882.18

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Solution

The fourth proportional to 12,978,937,889.70, 19,467,821,806.61 and 5,412,606,882.18 is: 8,118,666,349.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,978,937,889.70 : 19,467,821,806.61 = 5,412,606,882.18 : x
  2. Step 2: Convert to fraction form
    12,978,937,889.70/19,467,821,806.61 = 5,412,606,882.18/x
  3. Step 3: Cross multiply
    12,978,937,889.70x = 19,467,821,806.61 × 5,412,606,882.18
  4. Step 4: Simplify right side
    12,978,937,889.70x = 105,371,666,291,511,181,312
  5. Step 5: Solve for x
    x = 105,371,666,291,511,181,312/12,978,937,889.70
  6. Step 6: Final answer
    x = 8,118,666,349.05

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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.