Home / 512,431,278-768,881,144.79-278,912,166

Finding the Fourth Proportional to 512,431,278, 768,881,144.79 and 278,912,166

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Solution

The fourth proportional to 512,431,278, 768,881,144.79 and 278,912,166 is: 418,495,737.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,431,278 : 768,881,144.79 = 278,912,166 : x
  2. Step 2: Convert to fraction form
    512,431,278/768,881,144.79 = 278,912,166/x
  3. Step 3: Cross multiply
    512,431,278x = 768,881,144.79 × 278,912,166
  4. Step 4: Simplify right side
    512,431,278x = 214,450,305,489,938,496
  5. Step 5: Solve for x
    x = 214,450,305,489,938,496/512,431,278
  6. Step 6: Final answer
    x = 418,495,737.28

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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.