Home / 1,405,451,048.15-1,939,522,630.29-778,959,922.61

Finding the Fourth Proportional to 1,405,451,048.15, 1,939,522,630.29 and 778,959,922.61

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Solution

The fourth proportional to 1,405,451,048.15, 1,939,522,630.29 and 778,959,922.61 is: 1,074,964,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,451,048.15 : 1,939,522,630.29 = 778,959,922.61 : x
  2. Step 2: Convert to fraction form
    1,405,451,048.15/1,939,522,630.29 = 778,959,922.61/x
  3. Step 3: Cross multiply
    1,405,451,048.15x = 1,939,522,630.29 × 778,959,922.61
  4. Step 4: Simplify right side
    1,405,451,048.15x = 1,510,810,397,991,042,048
  5. Step 5: Solve for x
    x = 1,510,810,397,991,042,048/1,405,451,048.15
  6. Step 6: Final answer
    x = 1,074,964,795.10

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1.5x scale

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.