Home / 919,941.20-1,379,911.80-868,619.60

Finding the Fourth Proportional to 919,941.20, 1,379,911.80 and 868,619.60

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Solution

The fourth proportional to 919,941.20, 1,379,911.80 and 868,619.60 is: 1,302,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,941.20 : 1,379,911.80 = 868,619.60 : x
  2. Step 2: Convert to fraction form
    919,941.20/1,379,911.80 = 868,619.60/x
  3. Step 3: Cross multiply
    919,941.20x = 1,379,911.80 × 868,619.60
  4. Step 4: Simplify right side
    919,941.20x = 1,198,618,435,751.28
  5. Step 5: Solve for x
    x = 1,198,618,435,751.28/919,941.20
  6. Step 6: Final answer
    x = 1,302,929.40

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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.