Home / 818,609.97-1,228,111.58-313,162.68

Finding the Fourth Proportional to 818,609.97, 1,228,111.58 and 313,162.68

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Solution

The fourth proportional to 818,609.97, 1,228,111.58 and 313,162.68 is: 469,819.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,609.97 : 1,228,111.58 = 313,162.68 : x
  2. Step 2: Convert to fraction form
    818,609.97/1,228,111.58 = 313,162.68/x
  3. Step 3: Cross multiply
    818,609.97x = 1,228,111.58 × 313,162.68
  4. Step 4: Simplify right side
    818,609.97x = 384,598,713,731.83
  5. Step 5: Solve for x
    x = 384,598,713,731.83/818,609.97
  6. Step 6: Final answer
    x = 469,819.24

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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.