Home / 1,271,620,879.05-1,907,522,120.25-338,938,841.25

Finding the Fourth Proportional to 1,271,620,879.05, 1,907,522,120.25 and 338,938,841.25

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Solution

The fourth proportional to 1,271,620,879.05, 1,907,522,120.25 and 338,938,841.25 is: 508,432,464.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,620,879.05 : 1,907,522,120.25 = 338,938,841.25 : x
  2. Step 2: Convert to fraction form
    1,271,620,879.05/1,907,522,120.25 = 338,938,841.25/x
  3. Step 3: Cross multiply
    1,271,620,879.05x = 1,907,522,120.25 × 338,938,841.25
  4. Step 4: Simplify right side
    1,271,620,879.05x = 646,533,337,096,278,144
  5. Step 5: Solve for x
    x = 646,533,337,096,278,144/1,271,620,879.05
  6. Step 6: Final answer
    x = 508,432,464.23

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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.