Home / 856,178.91-1,182,321.09-640,945.31

Finding the Fourth Proportional to 856,178.91, 1,182,321.09 and 640,945.31

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Solution

The fourth proportional to 856,178.91, 1,182,321.09 and 640,945.31 is: 885,099.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,178.91 : 1,182,321.09 = 640,945.31 : x
  2. Step 2: Convert to fraction form
    856,178.91/1,182,321.09 = 640,945.31/x
  3. Step 3: Cross multiply
    856,178.91x = 1,182,321.09 × 640,945.31
  4. Step 4: Simplify right side
    856,178.91x = 757,803,151,637.98
  5. Step 5: Solve for x
    x = 757,803,151,637.98/856,178.91
  6. Step 6: Final answer
    x = 885,099.06

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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.