Home / 640,958,217.46-961,419,389.99-204,285,105.19

Finding the Fourth Proportional to 640,958,217.46, 961,419,389.99 and 204,285,105.19

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Solution

The fourth proportional to 640,958,217.46, 961,419,389.99 and 204,285,105.19 is: 306,421,941.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,958,217.46 : 961,419,389.99 = 204,285,105.19 : x
  2. Step 2: Convert to fraction form
    640,958,217.46/961,419,389.99 = 204,285,105.19/x
  3. Step 3: Cross multiply
    640,958,217.46x = 961,419,389.99 × 204,285,105.19
  4. Step 4: Simplify right side
    640,958,217.46x = 196,403,661,210,589,952
  5. Step 5: Solve for x
    x = 196,403,661,210,589,952/640,958,217.46
  6. Step 6: Final answer
    x = 306,421,941.18

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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.