Home / 393,947,412.84-543,675,561.66-217,731,621.24

Finding the Fourth Proportional to 393,947,412.84, 543,675,561.66 and 217,731,621.24

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Solution

The fourth proportional to 393,947,412.84, 543,675,561.66 and 217,731,621.24 is: 300,485,185.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,947,412.84 : 543,675,561.66 = 217,731,621.24 : x
  2. Step 2: Convert to fraction form
    393,947,412.84/543,675,561.66 = 217,731,621.24/x
  3. Step 3: Cross multiply
    393,947,412.84x = 543,675,561.66 × 217,731,621.24
  4. Step 4: Simplify right side
    393,947,412.84x = 118,375,361,468,799,376
  5. Step 5: Solve for x
    x = 118,375,361,468,799,376/393,947,412.84
  6. Step 6: Final answer
    x = 300,485,185.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.