Home / 1,149,689.72-1,586,620.77-640,391.96

Finding the Fourth Proportional to 1,149,689.72, 1,586,620.77 and 640,391.96

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Solution

The fourth proportional to 1,149,689.72, 1,586,620.77 and 640,391.96 is: 883,768.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149,689.72 : 1,586,620.77 = 640,391.96 : x
  2. Step 2: Convert to fraction form
    1,149,689.72/1,586,620.77 = 640,391.96/x
  3. Step 3: Cross multiply
    1,149,689.72x = 1,586,620.77 × 640,391.96
  4. Step 4: Simplify right side
    1,149,689.72x = 1,016,059,184,677.01
  5. Step 5: Solve for x
    x = 1,016,059,184,677.01/1,149,689.72
  6. Step 6: Final answer
    x = 883,768.17

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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.