Home / 685,097,209.44-945,435,078-371,831,433.12

Finding the Fourth Proportional to 685,097,209.44, 945,435,078 and 371,831,433.12

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Solution

The fourth proportional to 685,097,209.44, 945,435,078 and 371,831,433.12 is: 513,127,881.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,097,209.44 : 945,435,078 = 371,831,433.12 : x
  2. Step 2: Convert to fraction form
    685,097,209.44/945,435,078 = 371,831,433.12/x
  3. Step 3: Cross multiply
    685,097,209.44x = 945,435,078 × 371,831,433.12
  4. Step 4: Simplify right side
    685,097,209.44x = 351,542,479,974,659,008
  5. Step 5: Solve for x
    x = 351,542,479,974,659,008/685,097,209.44
  6. Step 6: Final answer
    x = 513,127,881.90

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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.