Home / 1,189,504.77-1,641,518.26-645,640.67

Finding the Fourth Proportional to 1,189,504.77, 1,641,518.26 and 645,640.67

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Solution

The fourth proportional to 1,189,504.77, 1,641,518.26 and 645,640.67 is: 890,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,504.77 : 1,641,518.26 = 645,640.67 : x
  2. Step 2: Convert to fraction form
    1,189,504.77/1,641,518.26 = 645,640.67/x
  3. Step 3: Cross multiply
    1,189,504.77x = 1,641,518.26 × 645,640.67
  4. Step 4: Simplify right side
    1,189,504.77x = 1,059,830,951,693.33
  5. Step 5: Solve for x
    x = 1,059,830,951,693.33/1,189,504.77
  6. Step 6: Final answer
    x = 890,985.04

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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.