Home / 1,211,440.80-1,812,860.40-1,055,383.20

Finding the Fourth Proportional to 1,211,440.80, 1,812,860.40 and 1,055,383.20

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Solution

The fourth proportional to 1,211,440.80, 1,812,860.40 and 1,055,383.20 is: 1,579,328.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,440.80 : 1,812,860.40 = 1,055,383.20 : x
  2. Step 2: Convert to fraction form
    1,211,440.80/1,812,860.40 = 1,055,383.20/x
  3. Step 3: Cross multiply
    1,211,440.80x = 1,812,860.40 × 1,055,383.20
  4. Step 4: Simplify right side
    1,211,440.80x = 1,913,262,410,105.28
  5. Step 5: Solve for x
    x = 1,913,262,410,105.28/1,211,440.80
  6. Step 6: Final answer
    x = 1,579,328.03

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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.