Home / 856,681.20-1,285,021.80-540,111.60

Finding the Fourth Proportional to 856,681.20, 1,285,021.80 and 540,111.60

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Solution

The fourth proportional to 856,681.20, 1,285,021.80 and 540,111.60 is: 810,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,681.20 : 1,285,021.80 = 540,111.60 : x
  2. Step 2: Convert to fraction form
    856,681.20/1,285,021.80 = 540,111.60/x
  3. Step 3: Cross multiply
    856,681.20x = 1,285,021.80 × 540,111.60
  4. Step 4: Simplify right side
    856,681.20x = 694,055,180,432.88
  5. Step 5: Solve for x
    x = 694,055,180,432.88/856,681.20
  6. Step 6: Final answer
    x = 810,167.40

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Similar ratio
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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.