Home / 818,849.96-1,228,655.37-313,243.80

Finding the Fourth Proportional to 818,849.96, 1,228,655.37 and 313,243.80

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Solution

The fourth proportional to 818,849.96, 1,228,655.37 and 313,243.80 is: 470,011.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,849.96 : 1,228,655.37 = 313,243.80 : x
  2. Step 2: Convert to fraction form
    818,849.96/1,228,655.37 = 313,243.80/x
  3. Step 3: Cross multiply
    818,849.96x = 1,228,655.37 × 313,243.80
  4. Step 4: Simplify right side
    818,849.96x = 384,868,676,989.21
  5. Step 5: Solve for x
    x = 384,868,676,989.21/818,849.96
  6. Step 6: Final answer
    x = 470,011.23

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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.