Home / 856,173.90-1,182,314.19-640,940.30

Finding the Fourth Proportional to 856,173.90, 1,182,314.19 and 640,940.30

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Solution

The fourth proportional to 856,173.90, 1,182,314.19 and 640,940.30 is: 885,092.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,173.90 : 1,182,314.19 = 640,940.30 : x
  2. Step 2: Convert to fraction form
    856,173.90/1,182,314.19 = 640,940.30/x
  3. Step 3: Cross multiply
    856,173.90x = 1,182,314.19 × 640,940.30
  4. Step 4: Simplify right side
    856,173.90x = 757,792,811,632.86
  5. Step 5: Solve for x
    x = 757,792,811,632.86/856,173.90
  6. Step 6: Final answer
    x = 885,092.17

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1.5x scale

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.