Home / 1,405,451,047.84-1,939,522,629.86-778,959,922.30

Finding the Fourth Proportional to 1,405,451,047.84, 1,939,522,629.86 and 778,959,922.30

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Solution

The fourth proportional to 1,405,451,047.84, 1,939,522,629.86 and 778,959,922.30 is: 1,074,964,794.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,451,047.84 : 1,939,522,629.86 = 778,959,922.30 : x
  2. Step 2: Convert to fraction form
    1,405,451,047.84/1,939,522,629.86 = 778,959,922.30/x
  3. Step 3: Cross multiply
    1,405,451,047.84x = 1,939,522,629.86 × 778,959,922.30
  4. Step 4: Simplify right side
    1,405,451,047.84x = 1,510,810,397,048,975,872
  5. Step 5: Solve for x
    x = 1,510,810,397,048,975,872/1,405,451,047.84
  6. Step 6: Final answer
    x = 1,074,964,794.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.