Home / 1,395,920.80-2,090,770.80-1,209,296.80

Finding the Fourth Proportional to 1,395,920.80, 2,090,770.80 and 1,209,296.80

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Solution

The fourth proportional to 1,395,920.80, 2,090,770.80 and 1,209,296.80 is: 1,811,250.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,920.80 : 2,090,770.80 = 1,209,296.80 : x
  2. Step 2: Convert to fraction form
    1,395,920.80/2,090,770.80 = 1,209,296.80/x
  3. Step 3: Cross multiply
    1,395,920.80x = 2,090,770.80 × 1,209,296.80
  4. Step 4: Simplify right side
    1,395,920.80x = 2,528,362,437,973.44
  5. Step 5: Solve for x
    x = 2,528,362,437,973.44/1,395,920.80
  6. Step 6: Final answer
    x = 1,811,250.64

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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.