Home / 12,978,937,888.45-19,467,821,804.74-5,412,606,880.93

Finding the Fourth Proportional to 12,978,937,888.45, 19,467,821,804.74 and 5,412,606,880.93

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Solution

The fourth proportional to 12,978,937,888.45, 19,467,821,804.74 and 5,412,606,880.93 is: 8,118,666,347.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,978,937,888.45 : 19,467,821,804.74 = 5,412,606,880.93 : x
  2. Step 2: Convert to fraction form
    12,978,937,888.45/19,467,821,804.74 = 5,412,606,880.93/x
  3. Step 3: Cross multiply
    12,978,937,888.45x = 19,467,821,804.74 × 5,412,606,880.93
  4. Step 4: Simplify right side
    12,978,937,888.45x = 105,371,666,257,027,760,128
  5. Step 5: Solve for x
    x = 105,371,666,257,027,760,128/12,978,937,888.45
  6. Step 6: Final answer
    x = 8,118,666,347.17

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1.5x scale

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.