Home / 726,289.40-1,089,045.30-305,089.40

Finding the Fourth Proportional to 726,289.40, 1,089,045.30 and 305,089.40

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Solution

The fourth proportional to 726,289.40, 1,089,045.30 and 305,089.40 is: 457,470.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,289.40 : 1,089,045.30 = 305,089.40 : x
  2. Step 2: Convert to fraction form
    726,289.40/1,089,045.30 = 305,089.40/x
  3. Step 3: Cross multiply
    726,289.40x = 1,089,045.30 × 305,089.40
  4. Step 4: Simplify right side
    726,289.40x = 332,256,177,149.82
  5. Step 5: Solve for x
    x = 332,256,177,149.82/726,289.40
  6. Step 6: Final answer
    x = 457,470.78

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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.