Home / 1,438,640.68-1,985,027.78-826,675.21

Finding the Fourth Proportional to 1,438,640.68, 1,985,027.78 and 826,675.21

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Solution

The fourth proportional to 1,438,640.68, 1,985,027.78 and 826,675.21 is: 1,140,641.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,640.68 : 1,985,027.78 = 826,675.21 : x
  2. Step 2: Convert to fraction form
    1,438,640.68/1,985,027.78 = 826,675.21/x
  3. Step 3: Cross multiply
    1,438,640.68x = 1,985,027.78 × 826,675.21
  4. Step 4: Simplify right side
    1,438,640.68x = 1,640,973,260,739.26
  5. Step 5: Solve for x
    x = 1,640,973,260,739.26/1,438,640.68
  6. Step 6: Final answer
    x = 1,140,641.50

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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.