Home / 879,620.20-1,317,680.70-816,634.60

Finding the Fourth Proportional to 879,620.20, 1,317,680.70 and 816,634.60

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Solution

The fourth proportional to 879,620.20, 1,317,680.70 and 816,634.60 is: 1,223,327.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,620.20 : 1,317,680.70 = 816,634.60 : x
  2. Step 2: Convert to fraction form
    879,620.20/1,317,680.70 = 816,634.60/x
  3. Step 3: Cross multiply
    879,620.20x = 1,317,680.70 × 816,634.60
  4. Step 4: Simplify right side
    879,620.20x = 1,076,063,651,372.22
  5. Step 5: Solve for x
    x = 1,076,063,651,372.22/879,620.20
  6. Step 6: Final answer
    x = 1,223,327.58

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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.