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Finding the Fourth Proportional to 647,211.33, 891,119.07 and 550,224.36

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Solution

The fourth proportional to 647,211.33, 891,119.07 and 550,224.36 is: 757,581.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,211.33 : 891,119.07 = 550,224.36 : x
  2. Step 2: Convert to fraction form
    647,211.33/891,119.07 = 550,224.36/x
  3. Step 3: Cross multiply
    647,211.33x = 891,119.07 × 550,224.36
  4. Step 4: Simplify right side
    647,211.33x = 490,315,419,974.55
  5. Step 5: Solve for x
    x = 490,315,419,974.55/647,211.33
  6. Step 6: Final answer
    x = 757,581.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.