Home / 856,174.40-1,182,314.88-640,940.80

Finding the Fourth Proportional to 856,174.40, 1,182,314.88 and 640,940.80

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Solution

The fourth proportional to 856,174.40, 1,182,314.88 and 640,940.80 is: 885,092.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,174.40 : 1,182,314.88 = 640,940.80 : x
  2. Step 2: Convert to fraction form
    856,174.40/1,182,314.88 = 640,940.80/x
  3. Step 3: Cross multiply
    856,174.40x = 1,182,314.88 × 640,940.80
  4. Step 4: Simplify right side
    856,174.40x = 757,793,845,039.10
  5. Step 5: Solve for x
    x = 757,793,845,039.10/856,174.40
  6. Step 6: Final answer
    x = 885,092.86

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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.