Home / 789,314.20-1,183,193.70-390,016.60

Finding the Fourth Proportional to 789,314.20, 1,183,193.70 and 390,016.60

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Solution

The fourth proportional to 789,314.20, 1,183,193.70 and 390,016.60 is: 584,640.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,314.20 : 1,183,193.70 = 390,016.60 : x
  2. Step 2: Convert to fraction form
    789,314.20/1,183,193.70 = 390,016.60/x
  3. Step 3: Cross multiply
    789,314.20x = 1,183,193.70 × 390,016.60
  4. Step 4: Simplify right side
    789,314.20x = 461,465,184,015.42
  5. Step 5: Solve for x
    x = 461,465,184,015.42/789,314.20
  6. Step 6: Final answer
    x = 584,640.67

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.