Home / 1,271,620,851.30-1,907,522,078.63-338,938,813.53

Finding the Fourth Proportional to 1,271,620,851.30, 1,907,522,078.63 and 338,938,813.53

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Solution

The fourth proportional to 1,271,620,851.30, 1,907,522,078.63 and 338,938,813.53 is: 508,432,422.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,620,851.30 : 1,907,522,078.63 = 338,938,813.53 : x
  2. Step 2: Convert to fraction form
    1,271,620,851.30/1,907,522,078.63 = 338,938,813.53/x
  3. Step 3: Cross multiply
    1,271,620,851.30x = 1,907,522,078.63 × 338,938,813.53
  4. Step 4: Simplify right side
    1,271,620,851.30x = 646,533,270,111,436,800
  5. Step 5: Solve for x
    x = 646,533,270,111,436,800/1,271,620,851.30
  6. Step 6: Final answer
    x = 508,432,422.64

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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.