Home / 685,889.64-1,028,616.35-641,111.40

Finding the Fourth Proportional to 685,889.64, 1,028,616.35 and 641,111.40

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Solution

The fourth proportional to 685,889.64, 1,028,616.35 and 641,111.40 is: 961,463.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,889.64 : 1,028,616.35 = 641,111.40 : x
  2. Step 2: Convert to fraction form
    685,889.64/1,028,616.35 = 641,111.40/x
  3. Step 3: Cross multiply
    685,889.64x = 1,028,616.35 × 641,111.40
  4. Step 4: Simplify right side
    685,889.64x = 659,457,665,005.83
  5. Step 5: Solve for x
    x = 659,457,665,005.83/685,889.64
  6. Step 6: Final answer
    x = 961,463.22

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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.