Home / 726,487.79-1,089,354.09-214,085.72

Finding the Fourth Proportional to 726,487.79, 1,089,354.09 and 214,085.72

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Solution

The fourth proportional to 726,487.79, 1,089,354.09 and 214,085.72 is: 321,017.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,487.79 : 1,089,354.09 = 214,085.72 : x
  2. Step 2: Convert to fraction form
    726,487.79/1,089,354.09 = 214,085.72/x
  3. Step 3: Cross multiply
    726,487.79x = 1,089,354.09 × 214,085.72
  4. Step 4: Simplify right side
    726,487.79x = 233,215,149,245.82
  5. Step 5: Solve for x
    x = 233,215,149,245.82/726,487.79
  6. Step 6: Final answer
    x = 321,017.30

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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.