Home / 1,122,300.70-1,684,121.76-412,400.50

Finding the Fourth Proportional to 1,122,300.70, 1,684,121.76 and 412,400.50

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Solution

The fourth proportional to 1,122,300.70, 1,684,121.76 and 412,400.50 is: 618,847.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,300.70 : 1,684,121.76 = 412,400.50 : x
  2. Step 2: Convert to fraction form
    1,122,300.70/1,684,121.76 = 412,400.50/x
  3. Step 3: Cross multiply
    1,122,300.70x = 1,684,121.76 × 412,400.50
  4. Step 4: Simplify right side
    1,122,300.70x = 694,532,655,884.88
  5. Step 5: Solve for x
    x = 694,532,655,884.88/1,122,300.70
  6. Step 6: Final answer
    x = 618,847.21

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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.