Home / 681,278,659,478.56-939,960,441,866.60-392,239,487,317.44

Finding the Fourth Proportional to 681,278,659,478.56, 939,960,441,866.60 and 392,239,487,317.44

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Solution

The fourth proportional to 681,278,659,478.56, 939,960,441,866.60 and 392,239,487,317.44 is: 541,172,979,201.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,278,659,478.56 : 939,960,441,866.60 = 392,239,487,317.44 : x
  2. Step 2: Convert to fraction form
    681,278,659,478.56/939,960,441,866.60 = 392,239,487,317.44/x
  3. Step 3: Cross multiply
    681,278,659,478.56x = 939,960,441,866.60 × 392,239,487,317.44
  4. Step 4: Simplify right side
    681,278,659,478.56x = 368,689,601,816,429,525,467,136
  5. Step 5: Solve for x
    x = 368,689,601,816,429,525,467,136/681,278,659,478.56
  6. Step 6: Final answer
    x = 541,172,979,201.52

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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.