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Finding the Fourth Proportional to 620,887.88, 856,896.32 and 345,273.23

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Solution

The fourth proportional to 620,887.88, 856,896.32 and 345,273.23 is: 476,516.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,887.88 : 856,896.32 = 345,273.23 : x
  2. Step 2: Convert to fraction form
    620,887.88/856,896.32 = 345,273.23/x
  3. Step 3: Cross multiply
    620,887.88x = 856,896.32 × 345,273.23
  4. Step 4: Simplify right side
    620,887.88x = 295,863,361,244.78
  5. Step 5: Solve for x
    x = 295,863,361,244.78/620,887.88
  6. Step 6: Final answer
    x = 476,516.57

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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.