Home / 1,215,323.20-1,821,818.40-945,301.60

Finding the Fourth Proportional to 1,215,323.20, 1,821,818.40 and 945,301.60

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Solution

The fourth proportional to 1,215,323.20, 1,821,818.40 and 945,301.60 is: 1,417,045.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,323.20 : 1,821,818.40 = 945,301.60 : x
  2. Step 2: Convert to fraction form
    1,215,323.20/1,821,818.40 = 945,301.60/x
  3. Step 3: Cross multiply
    1,215,323.20x = 1,821,818.40 × 945,301.60
  4. Step 4: Simplify right side
    1,215,323.20x = 1,722,167,848,429.44
  5. Step 5: Solve for x
    x = 1,722,167,848,429.44/1,215,323.20
  6. Step 6: Final answer
    x = 1,417,045.15

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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.