Home / 789,501.72-1,089,446.58-445,318.68

Finding the Fourth Proportional to 789,501.72, 1,089,446.58 and 445,318.68

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Solution

The fourth proportional to 789,501.72, 1,089,446.58 and 445,318.68 is: 614,502.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,501.72 : 1,089,446.58 = 445,318.68 : x
  2. Step 2: Convert to fraction form
    789,501.72/1,089,446.58 = 445,318.68/x
  3. Step 3: Cross multiply
    789,501.72x = 1,089,446.58 × 445,318.68
  4. Step 4: Simplify right side
    789,501.72x = 485,150,912,936.11
  5. Step 5: Solve for x
    x = 485,150,912,936.11/789,501.72
  6. Step 6: Final answer
    x = 614,502.67

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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.