Home / 393,504,907.20-590,257,360.80-120,889,233.60

Finding the Fourth Proportional to 393,504,907.20, 590,257,360.80 and 120,889,233.60

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Solution

The fourth proportional to 393,504,907.20, 590,257,360.80 and 120,889,233.60 is: 181,333,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,504,907.20 : 590,257,360.80 = 120,889,233.60 : x
  2. Step 2: Convert to fraction form
    393,504,907.20/590,257,360.80 = 120,889,233.60/x
  3. Step 3: Cross multiply
    393,504,907.20x = 590,257,360.80 × 120,889,233.60
  4. Step 4: Simplify right side
    393,504,907.20x = 71,355,759,973,870,672
  5. Step 5: Solve for x
    x = 71,355,759,973,870,672/393,504,907.20
  6. Step 6: Final answer
    x = 181,333,850.40

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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.