Home / 789,820,971.49-1,089,970,579.64-450,722,694.44

Finding the Fourth Proportional to 789,820,971.49, 1,089,970,579.64 and 450,722,694.44

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Solution

The fourth proportional to 789,820,971.49, 1,089,970,579.64 and 450,722,694.44 is: 622,007,384.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,820,971.49 : 1,089,970,579.64 = 450,722,694.44 : x
  2. Step 2: Convert to fraction form
    789,820,971.49/1,089,970,579.64 = 450,722,694.44/x
  3. Step 3: Cross multiply
    789,820,971.49x = 1,089,970,579.64 × 450,722,694.44
  4. Step 4: Simplify right side
    789,820,971.49x = 491,274,476,519,521,088
  5. Step 5: Solve for x
    x = 491,274,476,519,521,088/789,820,971.49
  6. Step 6: Final answer
    x = 622,007,384.27

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Double scale
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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.