Home / 818,676.32-1,228,145.88-345,431.36

Finding the Fourth Proportional to 818,676.32, 1,228,145.88 and 345,431.36

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Solution

The fourth proportional to 818,676.32, 1,228,145.88 and 345,431.36 is: 518,202.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,676.32 : 1,228,145.88 = 345,431.36 : x
  2. Step 2: Convert to fraction form
    818,676.32/1,228,145.88 = 345,431.36/x
  3. Step 3: Cross multiply
    818,676.32x = 1,228,145.88 × 345,431.36
  4. Step 4: Simplify right side
    818,676.32x = 424,240,101,606.80
  5. Step 5: Solve for x
    x = 424,240,101,606.80/818,676.32
  6. Step 6: Final answer
    x = 518,202.48

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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.