Home / 789,783.60-1,089,807.42-445,599.69

Finding the Fourth Proportional to 789,783.60, 1,089,807.42 and 445,599.69

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Solution

The fourth proportional to 789,783.60, 1,089,807.42 and 445,599.69 is: 614,874.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,783.60 : 1,089,807.42 = 445,599.69 : x
  2. Step 2: Convert to fraction form
    789,783.60/1,089,807.42 = 445,599.69/x
  3. Step 3: Cross multiply
    789,783.60x = 1,089,807.42 × 445,599.69
  4. Step 4: Simplify right side
    789,783.60x = 485,617,848,511.70
  5. Step 5: Solve for x
    x = 485,617,848,511.70/789,783.60
  6. Step 6: Final answer
    x = 614,874.57

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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.