Home / 393,632,705.48-543,213,112.83-212,579,669.51

Finding the Fourth Proportional to 393,632,705.48, 543,213,112.83 and 212,579,669.51

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Solution

The fourth proportional to 393,632,705.48, 543,213,112.83 and 212,579,669.51 is: 293,359,932.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,632,705.48 : 543,213,112.83 = 212,579,669.51 : x
  2. Step 2: Convert to fraction form
    393,632,705.48/543,213,112.83 = 212,579,669.51/x
  3. Step 3: Cross multiply
    393,632,705.48x = 543,213,112.83 × 212,579,669.51
  4. Step 4: Simplify right side
    393,632,705.48x = 115,476,064,000,481,840
  5. Step 5: Solve for x
    x = 115,476,064,000,481,840/393,632,705.48
  6. Step 6: Final answer
    x = 293,359,932.73

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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.