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Finding the Fourth Proportional to 620,676.68, 856,534.38 and 352,404.68

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Solution

The fourth proportional to 620,676.68, 856,534.38 and 352,404.68 is: 486,318.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,676.68 : 856,534.38 = 352,404.68 : x
  2. Step 2: Convert to fraction form
    620,676.68/856,534.38 = 352,404.68/x
  3. Step 3: Cross multiply
    620,676.68x = 856,534.38 × 352,404.68
  4. Step 4: Simplify right side
    620,676.68x = 301,846,724,092.90
  5. Step 5: Solve for x
    x = 301,846,724,092.90/620,676.68
  6. Step 6: Final answer
    x = 486,318.78

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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.