Home / 261,621,375.76-392,489,525.16-77,374,487.56

Finding the Fourth Proportional to 261,621,375.76, 392,489,525.16 and 77,374,487.56

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Solution

The fourth proportional to 261,621,375.76, 392,489,525.16 and 77,374,487.56 is: 116,078,725.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,621,375.76 : 392,489,525.16 = 77,374,487.56 : x
  2. Step 2: Convert to fraction form
    261,621,375.76/392,489,525.16 = 77,374,487.56/x
  3. Step 3: Cross multiply
    261,621,375.76x = 392,489,525.16 × 77,374,487.56
  4. Step 4: Simplify right side
    261,621,375.76x = 30,368,675,881,922,728
  5. Step 5: Solve for x
    x = 30,368,675,881,922,728/261,621,375.76
  6. Step 6: Final answer
    x = 116,078,725.58

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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.