Home / 428,379,314.58-642,649,622.96-305,252,185.10

Finding the Fourth Proportional to 428,379,314.58, 642,649,622.96 and 305,252,185.10

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Solution

The fourth proportional to 428,379,314.58, 642,649,622.96 and 305,252,185.10 is: 457,935,747.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,379,314.58 : 642,649,622.96 = 305,252,185.10 : x
  2. Step 2: Convert to fraction form
    428,379,314.58/642,649,622.96 = 305,252,185.10/x
  3. Step 3: Cross multiply
    428,379,314.58x = 642,649,622.96 × 305,252,185.10
  4. Step 4: Simplify right side
    428,379,314.58x = 196,170,201,662,231,168
  5. Step 5: Solve for x
    x = 196,170,201,662,231,168/428,379,314.58
  6. Step 6: Final answer
    x = 457,935,747.56

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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.