Home / 1,213,836.40-1,821,410.70-540,021.70

Finding the Fourth Proportional to 1,213,836.40, 1,821,410.70 and 540,021.70

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Solution

The fourth proportional to 1,213,836.40, 1,821,410.70 and 540,021.70 is: 810,324.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,836.40 : 1,821,410.70 = 540,021.70 : x
  2. Step 2: Convert to fraction form
    1,213,836.40/1,821,410.70 = 540,021.70/x
  3. Step 3: Cross multiply
    1,213,836.40x = 1,821,410.70 × 540,021.70
  4. Step 4: Simplify right side
    1,213,836.40x = 983,601,302,612.19
  5. Step 5: Solve for x
    x = 983,601,302,612.19/1,213,836.40
  6. Step 6: Final answer
    x = 810,324.44

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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.