Home / 856,182.40-1,182,325.92-640,948.80

Finding the Fourth Proportional to 856,182.40, 1,182,325.92 and 640,948.80

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Solution

The fourth proportional to 856,182.40, 1,182,325.92 and 640,948.80 is: 885,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,182.40 : 1,182,325.92 = 640,948.80 : x
  2. Step 2: Convert to fraction form
    856,182.40/1,182,325.92 = 640,948.80/x
  3. Step 3: Cross multiply
    856,182.40x = 1,182,325.92 × 640,948.80
  4. Step 4: Simplify right side
    856,182.40x = 757,810,379,632.90
  5. Step 5: Solve for x
    x = 757,810,379,632.90/856,182.40
  6. Step 6: Final answer
    x = 885,103.90

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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.