Home / 856,180.40-1,182,323.16-640,946.80

Finding the Fourth Proportional to 856,180.40, 1,182,323.16 and 640,946.80

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Solution

The fourth proportional to 856,180.40, 1,182,323.16 and 640,946.80 is: 885,101.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,180.40 : 1,182,323.16 = 640,946.80 : x
  2. Step 2: Convert to fraction form
    856,180.40/1,182,323.16 = 640,946.80/x
  3. Step 3: Cross multiply
    856,180.40x = 1,182,323.16 × 640,946.80
  4. Step 4: Simplify right side
    856,180.40x = 757,806,245,967.89
  5. Step 5: Solve for x
    x = 757,806,245,967.89/856,180.40
  6. Step 6: Final answer
    x = 885,101.14

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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.