Home / 1,206,209.20-1,809,313.80-319,745.20

Finding the Fourth Proportional to 1,206,209.20, 1,809,313.80 and 319,745.20

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Solution

The fourth proportional to 1,206,209.20, 1,809,313.80 and 319,745.20 is: 479,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,209.20 : 1,809,313.80 = 319,745.20 : x
  2. Step 2: Convert to fraction form
    1,206,209.20/1,809,313.80 = 319,745.20/x
  3. Step 3: Cross multiply
    1,206,209.20x = 1,809,313.80 × 319,745.20
  4. Step 4: Simplify right side
    1,206,209.20x = 578,519,402,843.76
  5. Step 5: Solve for x
    x = 578,519,402,843.76/1,206,209.20
  6. Step 6: Final answer
    x = 479,617.80

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1.5x scale

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.