Home / 1,399,980.60-2,097,638.10-1,315,999.80

Finding the Fourth Proportional to 1,399,980.60, 2,097,638.10 and 1,315,999.80

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Solution

The fourth proportional to 1,399,980.60, 2,097,638.10 and 1,315,999.80 is: 1,971,806.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,980.60 : 2,097,638.10 = 1,315,999.80 : x
  2. Step 2: Convert to fraction form
    1,399,980.60/2,097,638.10 = 1,315,999.80/x
  3. Step 3: Cross multiply
    1,399,980.60x = 2,097,638.10 × 1,315,999.80
  4. Step 4: Simplify right side
    1,399,980.60x = 2,760,491,320,072.38
  5. Step 5: Solve for x
    x = 2,760,491,320,072.38/1,399,980.60
  6. Step 6: Final answer
    x = 1,971,806.84

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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.