Home / 393,632,720-543,213,132.86-212,579,684.04

Finding the Fourth Proportional to 393,632,720, 543,213,132.86 and 212,579,684.04

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Solution

The fourth proportional to 393,632,720, 543,213,132.86 and 212,579,684.04 is: 293,359,952.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,632,720 : 543,213,132.86 = 212,579,684.04 : x
  2. Step 2: Convert to fraction form
    393,632,720/543,213,132.86 = 212,579,684.04/x
  3. Step 3: Cross multiply
    393,632,720x = 543,213,132.86 × 212,579,684.04
  4. Step 4: Simplify right side
    393,632,720x = 115,476,076,149,757,344
  5. Step 5: Solve for x
    x = 115,476,076,149,757,344/393,632,720
  6. Step 6: Final answer
    x = 293,359,952.77

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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.