Home / 728,376,770.61-1,005,159,230.82-393,848,493.89

Finding the Fourth Proportional to 728,376,770.61, 1,005,159,230.82 and 393,848,493.89

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Solution

The fourth proportional to 728,376,770.61, 1,005,159,230.82 and 393,848,493.89 is: 543,510,536.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,376,770.61 : 1,005,159,230.82 = 393,848,493.89 : x
  2. Step 2: Convert to fraction form
    728,376,770.61/1,005,159,230.82 = 393,848,493.89/x
  3. Step 3: Cross multiply
    728,376,770.61x = 1,005,159,230.82 × 393,848,493.89
  4. Step 4: Simplify right side
    728,376,770.61x = 395,880,449,173,062,080
  5. Step 5: Solve for x
    x = 395,880,449,173,062,080/728,376,770.61
  6. Step 6: Final answer
    x = 543,510,536.23

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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.