Home / 789,545.28-1,089,676.32-449,935.68

Finding the Fourth Proportional to 789,545.28, 1,089,676.32 and 449,935.68

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Solution

The fourth proportional to 789,545.28, 1,089,676.32 and 449,935.68 is: 620,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,545.28 : 1,089,676.32 = 449,935.68 : x
  2. Step 2: Convert to fraction form
    789,545.28/1,089,676.32 = 449,935.68/x
  3. Step 3: Cross multiply
    789,545.28x = 1,089,676.32 × 449,935.68
  4. Step 4: Simplify right side
    789,545.28x = 490,284,256,019.10
  5. Step 5: Solve for x
    x = 490,284,256,019.10/789,545.28
  6. Step 6: Final answer
    x = 620,970.41

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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.