Home / 856,837.20-1,285,255.80-657,771.60

Finding the Fourth Proportional to 856,837.20, 1,285,255.80 and 657,771.60

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Solution

The fourth proportional to 856,837.20, 1,285,255.80 and 657,771.60 is: 986,657.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,837.20 : 1,285,255.80 = 657,771.60 : x
  2. Step 2: Convert to fraction form
    856,837.20/1,285,255.80 = 657,771.60/x
  3. Step 3: Cross multiply
    856,837.20x = 1,285,255.80 × 657,771.60
  4. Step 4: Simplify right side
    856,837.20x = 845,404,763,975.28
  5. Step 5: Solve for x
    x = 845,404,763,975.28/856,837.20
  6. Step 6: Final answer
    x = 986,657.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.