Home / 856,511.20-1,284,766.80-539,941.60

Finding the Fourth Proportional to 856,511.20, 1,284,766.80 and 539,941.60

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Solution

The fourth proportional to 856,511.20, 1,284,766.80 and 539,941.60 is: 809,912.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,511.20 : 1,284,766.80 = 539,941.60 : x
  2. Step 2: Convert to fraction form
    856,511.20/1,284,766.80 = 539,941.60/x
  3. Step 3: Cross multiply
    856,511.20x = 1,284,766.80 × 539,941.60
  4. Step 4: Simplify right side
    856,511.20x = 693,699,041,618.88
  5. Step 5: Solve for x
    x = 693,699,041,618.88/856,511.20
  6. Step 6: Final answer
    x = 809,912.40

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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.