Home / 726,499.76-1,089,738.68-326,858.31

Finding the Fourth Proportional to 726,499.76, 1,089,738.68 and 326,858.31

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Solution

The fourth proportional to 726,499.76, 1,089,738.68 and 326,858.31 is: 490,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,499.76 : 1,089,738.68 = 326,858.31 : x
  2. Step 2: Convert to fraction form
    726,499.76/1,089,738.68 = 326,858.31/x
  3. Step 3: Cross multiply
    726,499.76x = 1,089,738.68 × 326,858.31
  4. Step 4: Simplify right side
    726,499.76x = 356,190,141,652.14
  5. Step 5: Solve for x
    x = 356,190,141,652.14/726,499.76
  6. Step 6: Final answer
    x = 490,282.54

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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.