Home / 393,207,180,086.85-538,684,878,450.12-378,505,795,142.94

Finding the Fourth Proportional to 393,207,180,086.85, 538,684,878,450.12 and 378,505,795,142.94

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Solution

The fourth proportional to 393,207,180,086.85, 538,684,878,450.12 and 378,505,795,142.94 is: 518,544,316,012.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,207,180,086.85 : 538,684,878,450.12 = 378,505,795,142.94 : x
  2. Step 2: Convert to fraction form
    393,207,180,086.85/538,684,878,450.12 = 378,505,795,142.94/x
  3. Step 3: Cross multiply
    393,207,180,086.85x = 538,684,878,450.12 × 378,505,795,142.94
  4. Step 4: Simplify right side
    393,207,180,086.85x = 203,895,348,249,240,654,577,664
  5. Step 5: Solve for x
    x = 203,895,348,249,240,654,577,664/393,207,180,086.85
  6. Step 6: Final answer
    x = 518,544,316,012.25

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.