Home / 1,271,102,261.78-1,906,659,482.10-385,795,311.68

Finding the Fourth Proportional to 1,271,102,261.78, 1,906,659,482.10 and 385,795,311.68

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Solution

The fourth proportional to 1,271,102,261.78, 1,906,659,482.10 and 385,795,311.68 is: 578,694,815.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,102,261.78 : 1,906,659,482.10 = 385,795,311.68 : x
  2. Step 2: Convert to fraction form
    1,271,102,261.78/1,906,659,482.10 = 385,795,311.68/x
  3. Step 3: Cross multiply
    1,271,102,261.78x = 1,906,659,482.10 × 385,795,311.68
  4. Step 4: Simplify right side
    1,271,102,261.78x = 735,580,289,164,396,800
  5. Step 5: Solve for x
    x = 735,580,289,164,396,800/1,271,102,261.78
  6. Step 6: Final answer
    x = 578,694,815.74

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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.