Home / 419,718,381.25-629,245,844.25-209,521,188.74

Finding the Fourth Proportional to 419,718,381.25, 629,245,844.25 and 209,521,188.74

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Solution

The fourth proportional to 419,718,381.25, 629,245,844.25 and 209,521,188.74 is: 314,116,186.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,718,381.25 : 629,245,844.25 = 209,521,188.74 : x
  2. Step 2: Convert to fraction form
    419,718,381.25/629,245,844.25 = 209,521,188.74/x
  3. Step 3: Cross multiply
    419,718,381.25x = 629,245,844.25 × 209,521,188.74
  4. Step 4: Simplify right side
    419,718,381.25x = 131,840,337,295,653,696
  5. Step 5: Solve for x
    x = 131,840,337,295,653,696/419,718,381.25
  6. Step 6: Final answer
    x = 314,116,186.44

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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.