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Finding the Fourth Proportional to 8,671,716.80, 13,004,513.40 and 2,990,619.80

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Solution

The fourth proportional to 8,671,716.80, 13,004,513.40 and 2,990,619.80 is: 4,484,873.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671,716.80 : 13,004,513.40 = 2,990,619.80 : x
  2. Step 2: Convert to fraction form
    8,671,716.80/13,004,513.40 = 2,990,619.80/x
  3. Step 3: Cross multiply
    8,671,716.80x = 13,004,513.40 × 2,990,619.80
  4. Step 4: Simplify right side
    8,671,716.80x = 38,891,555,263,405.32
  5. Step 5: Solve for x
    x = 38,891,555,263,405.32/8,671,716.80
  6. Step 6: Final answer
    x = 4,484,873.78

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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.