Home / 726,659.43-1,089,622.82-221,123.45

Finding the Fourth Proportional to 726,659.43, 1,089,622.82 and 221,123.45

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Solution

The fourth proportional to 726,659.43, 1,089,622.82 and 221,123.45 is: 331,573.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,659.43 : 1,089,622.82 = 221,123.45 : x
  2. Step 2: Convert to fraction form
    726,659.43/1,089,622.82 = 221,123.45/x
  3. Step 3: Cross multiply
    726,659.43x = 1,089,622.82 × 221,123.45
  4. Step 4: Simplify right side
    726,659.43x = 240,941,150,603.40
  5. Step 5: Solve for x
    x = 240,941,150,603.40/726,659.43
  6. Step 6: Final answer
    x = 331,573.69

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Double scale
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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.