Home / 818,845.96-1,228,649.38-313,239.80

Finding the Fourth Proportional to 818,845.96, 1,228,649.38 and 313,239.80

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Solution

The fourth proportional to 818,845.96, 1,228,649.38 and 313,239.80 is: 470,005.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,845.96 : 1,228,649.38 = 313,239.80 : x
  2. Step 2: Convert to fraction form
    818,845.96/1,228,649.38 = 313,239.80/x
  3. Step 3: Cross multiply
    818,845.96x = 1,228,649.38 × 313,239.80
  4. Step 4: Simplify right side
    818,845.96x = 384,861,886,061.32
  5. Step 5: Solve for x
    x = 384,861,886,061.32/818,845.96
  6. Step 6: Final answer
    x = 470,005.23

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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.