Home / 1,621,091.20-2,431,638.72-423,012.64

Finding the Fourth Proportional to 1,621,091.20, 2,431,638.72 and 423,012.64

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Solution

The fourth proportional to 1,621,091.20, 2,431,638.72 and 423,012.64 is: 634,519.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621,091.20 : 2,431,638.72 = 423,012.64 : x
  2. Step 2: Convert to fraction form
    1,621,091.20/2,431,638.72 = 423,012.64/x
  3. Step 3: Cross multiply
    1,621,091.20x = 2,431,638.72 × 423,012.64
  4. Step 4: Simplify right side
    1,621,091.20x = 1,028,613,914,473.42
  5. Step 5: Solve for x
    x = 1,028,613,914,473.42/1,621,091.20
  6. Step 6: Final answer
    x = 634,519.46

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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.