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Finding the Fourth Proportional to 620,563.83, 856,464.41 and 348,652.75

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Solution

The fourth proportional to 620,563.83, 856,464.41 and 348,652.75 is: 481,189.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,563.83 : 856,464.41 = 348,652.75 : x
  2. Step 2: Convert to fraction form
    620,563.83/856,464.41 = 348,652.75/x
  3. Step 3: Cross multiply
    620,563.83x = 856,464.41 × 348,652.75
  4. Step 4: Simplify right side
    620,563.83x = 298,608,667,541.31
  5. Step 5: Solve for x
    x = 298,608,667,541.31/620,563.83
  6. Step 6: Final answer
    x = 481,189.29

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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.