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Finding the Fourth Proportional to 620,571.64, 856,394.22 and 348,644.92

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Solution

The fourth proportional to 620,571.64, 856,394.22 and 348,644.92 is: 481,133.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,571.64 : 856,394.22 = 348,644.92 : x
  2. Step 2: Convert to fraction form
    620,571.64/856,394.22 = 348,644.92/x
  3. Step 3: Cross multiply
    620,571.64x = 856,394.22 × 348,644.92
  4. Step 4: Simplify right side
    620,571.64x = 298,577,494,320.36
  5. Step 5: Solve for x
    x = 298,577,494,320.36/620,571.64
  6. Step 6: Final answer
    x = 481,133.00

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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.