Home / 789,821,001.90-1,089,970,621.63-450,722,724.72

Finding the Fourth Proportional to 789,821,001.90, 1,089,970,621.63 and 450,722,724.72

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Solution

The fourth proportional to 789,821,001.90, 1,089,970,621.63 and 450,722,724.72 is: 622,007,426.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,821,001.90 : 1,089,970,621.63 = 450,722,724.72 : x
  2. Step 2: Convert to fraction form
    789,821,001.90/1,089,970,621.63 = 450,722,724.72/x
  3. Step 3: Cross multiply
    789,821,001.90x = 1,089,970,621.63 × 450,722,724.72
  4. Step 4: Simplify right side
    789,821,001.90x = 491,274,528,440,611,584
  5. Step 5: Solve for x
    x = 491,274,528,440,611,584/789,821,001.90
  6. Step 6: Final answer
    x = 622,007,426.06

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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.