Home / 407,961,660.51-612,061,871.81-131,607,558.27

Finding the Fourth Proportional to 407,961,660.51, 612,061,871.81 and 131,607,558.27

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Solution

The fourth proportional to 407,961,660.51, 612,061,871.81 and 131,607,558.27 is: 197,449,849.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,961,660.51 : 612,061,871.81 = 131,607,558.27 : x
  2. Step 2: Convert to fraction form
    407,961,660.51/612,061,871.81 = 131,607,558.27/x
  3. Step 3: Cross multiply
    407,961,660.51x = 612,061,871.81 × 131,607,558.27
  4. Step 4: Simplify right side
    407,961,660.51x = 80,551,968,458,421,792
  5. Step 5: Solve for x
    x = 80,551,968,458,421,792/407,961,660.51
  6. Step 6: Final answer
    x = 197,449,849.47

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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.