Home / 789,383.07-1,089,142.78-462,520.47

Finding the Fourth Proportional to 789,383.07, 1,089,142.78 and 462,520.47

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Solution

The fourth proportional to 789,383.07, 1,089,142.78 and 462,520.47 is: 638,157.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,383.07 : 1,089,142.78 = 462,520.47 : x
  2. Step 2: Convert to fraction form
    789,383.07/1,089,142.78 = 462,520.47/x
  3. Step 3: Cross multiply
    789,383.07x = 1,089,142.78 × 462,520.47
  4. Step 4: Simplify right side
    789,383.07x = 503,750,832,535.54
  5. Step 5: Solve for x
    x = 503,750,832,535.54/789,383.07
  6. Step 6: Final answer
    x = 638,157.63

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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.