Home / 1,189,220.70-1,782,879.69-620,316.39

Finding the Fourth Proportional to 1,189,220.70, 1,782,879.69 and 620,316.39

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Solution

The fourth proportional to 1,189,220.70, 1,782,879.69 and 620,316.39 is: 929,978.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,220.70 : 1,782,879.69 = 620,316.39 : x
  2. Step 2: Convert to fraction form
    1,189,220.70/1,782,879.69 = 620,316.39/x
  3. Step 3: Cross multiply
    1,189,220.70x = 1,782,879.69 × 620,316.39
  4. Step 4: Simplify right side
    1,189,220.70x = 1,105,949,493,105.12
  5. Step 5: Solve for x
    x = 1,105,949,493,105.12/1,189,220.70
  6. Step 6: Final answer
    x = 929,978.34

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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.