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Finding the Fourth Proportional to 620,680.22, 856,563.86 and 348,747.26

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Solution

The fourth proportional to 620,680.22, 856,563.86 and 348,747.26 is: 481,285.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,680.22 : 856,563.86 = 348,747.26 : x
  2. Step 2: Convert to fraction form
    620,680.22/856,563.86 = 348,747.26/x
  3. Step 3: Cross multiply
    620,680.22x = 856,563.86 × 348,747.26
  4. Step 4: Simplify right side
    620,680.22x = 298,724,295,779.07
  5. Step 5: Solve for x
    x = 298,724,295,779.07/620,680.22
  6. Step 6: Final answer
    x = 481,285.35

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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.