Home / 726,455.70-1,089,683.55-221,015.70

Finding the Fourth Proportional to 726,455.70, 1,089,683.55 and 221,015.70

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Solution

The fourth proportional to 726,455.70, 1,089,683.55 and 221,015.70 is: 331,523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,455.70 : 1,089,683.55 = 221,015.70 : x
  2. Step 2: Convert to fraction form
    726,455.70/1,089,683.55 = 221,015.70/x
  3. Step 3: Cross multiply
    726,455.70x = 1,089,683.55 × 221,015.70
  4. Step 4: Simplify right side
    726,455.70x = 240,837,172,581.74
  5. Step 5: Solve for x
    x = 240,837,172,581.74/726,455.70
  6. Step 6: Final answer
    x = 331,523.55

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Double scale
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Similar ratio
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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.