Home / 789,493.50-1,089,499.14-445,328.28

Finding the Fourth Proportional to 789,493.50, 1,089,499.14 and 445,328.28

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Solution

The fourth proportional to 789,493.50, 1,089,499.14 and 445,328.28 is: 614,551.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,493.50 : 1,089,499.14 = 445,328.28 : x
  2. Step 2: Convert to fraction form
    789,493.50/1,089,499.14 = 445,328.28/x
  3. Step 3: Cross multiply
    789,493.50x = 1,089,499.14 × 445,328.28
  4. Step 4: Simplify right side
    789,493.50x = 485,184,778,077.68
  5. Step 5: Solve for x
    x = 485,184,778,077.68/789,493.50
  6. Step 6: Final answer
    x = 614,551.96

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Double scale
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Similar ratio
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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.