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Finding the Fourth Proportional to 605,307,605.40, 908,120,840.40 and 217,089,954.90

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Solution

The fourth proportional to 605,307,605.40, 908,120,840.40 and 217,089,954.90 is: 325,692,111.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,307,605.40 : 908,120,840.40 = 217,089,954.90 : x
  2. Step 2: Convert to fraction form
    605,307,605.40/908,120,840.40 = 217,089,954.90/x
  3. Step 3: Cross multiply
    605,307,605.40x = 908,120,840.40 × 217,089,954.90
  4. Step 4: Simplify right side
    605,307,605.40x = 197,143,912,286,186,112
  5. Step 5: Solve for x
    x = 197,143,912,286,186,112/605,307,605.40
  6. Step 6: Final answer
    x = 325,692,111.79

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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.