Home / 2,105,715.60-3,158,573.40-685,915.20

Finding the Fourth Proportional to 2,105,715.60, 3,158,573.40 and 685,915.20

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Solution

The fourth proportional to 2,105,715.60, 3,158,573.40 and 685,915.20 is: 1,028,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105,715.60 : 3,158,573.40 = 685,915.20 : x
  2. Step 2: Convert to fraction form
    2,105,715.60/3,158,573.40 = 685,915.20/x
  3. Step 3: Cross multiply
    2,105,715.60x = 3,158,573.40 × 685,915.20
  4. Step 4: Simplify right side
    2,105,715.60x = 2,166,513,505,375.68
  5. Step 5: Solve for x
    x = 2,166,513,505,375.68/2,105,715.60
  6. Step 6: Final answer
    x = 1,028,872.80

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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.