Home / 856,176.40-1,182,317.64-640,942.80

Finding the Fourth Proportional to 856,176.40, 1,182,317.64 and 640,942.80

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Solution

The fourth proportional to 856,176.40, 1,182,317.64 and 640,942.80 is: 885,095.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,176.40 : 1,182,317.64 = 640,942.80 : x
  2. Step 2: Convert to fraction form
    856,176.40/1,182,317.64 = 640,942.80/x
  3. Step 3: Cross multiply
    856,176.40x = 1,182,317.64 × 640,942.80
  4. Step 4: Simplify right side
    856,176.40x = 757,797,978,670.99
  5. Step 5: Solve for x
    x = 757,797,978,670.99/856,176.40
  6. Step 6: Final answer
    x = 885,095.62

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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.