Home / 1,271,620,911.84-1,907,522,169.44-338,938,874.16

Finding the Fourth Proportional to 1,271,620,911.84, 1,907,522,169.44 and 338,938,874.16

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Solution

The fourth proportional to 1,271,620,911.84, 1,907,522,169.44 and 338,938,874.16 is: 508,432,513.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,620,911.84 : 1,907,522,169.44 = 338,938,874.16 : x
  2. Step 2: Convert to fraction form
    1,271,620,911.84/1,907,522,169.44 = 338,938,874.16/x
  3. Step 3: Cross multiply
    1,271,620,911.84x = 1,907,522,169.44 × 338,938,874.16
  4. Step 4: Simplify right side
    1,271,620,911.84x = 646,533,416,545,234,432
  5. Step 5: Solve for x
    x = 646,533,416,545,234,432/1,271,620,911.84
  6. Step 6: Final answer
    x = 508,432,513.59

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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.