Home / 1,230,556.80-1,845,489.60-389,366.40

Finding the Fourth Proportional to 1,230,556.80, 1,845,489.60 and 389,366.40

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Solution

The fourth proportional to 1,230,556.80, 1,845,489.60 and 389,366.40 is: 583,940.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,556.80 : 1,845,489.60 = 389,366.40 : x
  2. Step 2: Convert to fraction form
    1,230,556.80/1,845,489.60 = 389,366.40/x
  3. Step 3: Cross multiply
    1,230,556.80x = 1,845,489.60 × 389,366.40
  4. Step 4: Simplify right side
    1,230,556.80x = 718,571,641,789.44
  5. Step 5: Solve for x
    x = 718,571,641,789.44/1,230,556.80
  6. Step 6: Final answer
    x = 583,940.25

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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.