Home / 811,648.22-1,217,638.37-279,100.08

Finding the Fourth Proportional to 811,648.22, 1,217,638.37 and 279,100.08

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Solution

The fourth proportional to 811,648.22, 1,217,638.37 and 279,100.08 is: 418,707.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,648.22 : 1,217,638.37 = 279,100.08 : x
  2. Step 2: Convert to fraction form
    811,648.22/1,217,638.37 = 279,100.08/x
  3. Step 3: Cross multiply
    811,648.22x = 1,217,638.37 × 279,100.08
  4. Step 4: Simplify right side
    811,648.22x = 339,842,967,175.82
  5. Step 5: Solve for x
    x = 339,842,967,175.82/811,648.22
  6. Step 6: Final answer
    x = 418,707.22

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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.