Home / 1,223,879.14-1,688,947.77-680,103.46

Finding the Fourth Proportional to 1,223,879.14, 1,688,947.77 and 680,103.46

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Solution

The fourth proportional to 1,223,879.14, 1,688,947.77 and 680,103.46 is: 938,539.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,879.14 : 1,688,947.77 = 680,103.46 : x
  2. Step 2: Convert to fraction form
    1,223,879.14/1,688,947.77 = 680,103.46/x
  3. Step 3: Cross multiply
    1,223,879.14x = 1,688,947.77 × 680,103.46
  4. Step 4: Simplify right side
    1,223,879.14x = 1,148,659,222,136.28
  5. Step 5: Solve for x
    x = 1,148,659,222,136.28/1,223,879.14
  6. Step 6: Final answer
    x = 938,539.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.