Home / 680,638.85-1,021,172.71-320,795.13

Finding the Fourth Proportional to 680,638.85, 1,021,172.71 and 320,795.13

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Solution

The fourth proportional to 680,638.85, 1,021,172.71 and 320,795.13 is: 481,293.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,638.85 : 1,021,172.71 = 320,795.13 : x
  2. Step 2: Convert to fraction form
    680,638.85/1,021,172.71 = 320,795.13/x
  3. Step 3: Cross multiply
    680,638.85x = 1,021,172.71 × 320,795.13
  4. Step 4: Simplify right side
    680,638.85x = 327,587,232,256.90
  5. Step 5: Solve for x
    x = 327,587,232,256.90/680,638.85
  6. Step 6: Final answer
    x = 481,293.76

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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.