Home / 818,848.96-1,228,653.87-313,242.80

Finding the Fourth Proportional to 818,848.96, 1,228,653.87 and 313,242.80

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Solution

The fourth proportional to 818,848.96, 1,228,653.87 and 313,242.80 is: 470,009.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,848.96 : 1,228,653.87 = 313,242.80 : x
  2. Step 2: Convert to fraction form
    818,848.96/1,228,653.87 = 313,242.80/x
  3. Step 3: Cross multiply
    818,848.96x = 1,228,653.87 × 313,242.80
  4. Step 4: Simplify right side
    818,848.96x = 384,866,978,469.64
  5. Step 5: Solve for x
    x = 384,866,978,469.64/818,848.96
  6. Step 6: Final answer
    x = 470,009.73

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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.