Home / 807,485.20-1,209,915.60-673,640.80

Finding the Fourth Proportional to 807,485.20, 1,209,915.60 and 673,640.80

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Solution

The fourth proportional to 807,485.20, 1,209,915.60 and 673,640.80 is: 1,009,366.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,485.20 : 1,209,915.60 = 673,640.80 : x
  2. Step 2: Convert to fraction form
    807,485.20/1,209,915.60 = 673,640.80/x
  3. Step 3: Cross multiply
    807,485.20x = 1,209,915.60 × 673,640.80
  4. Step 4: Simplify right side
    807,485.20x = 815,048,512,716.48
  5. Step 5: Solve for x
    x = 815,048,512,716.48/807,485.20
  6. Step 6: Final answer
    x = 1,009,366.50

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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.