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Finding the Fourth Proportional to 486,620.96, 671,163.72 and 292,826.64

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Solution

The fourth proportional to 486,620.96, 671,163.72 and 292,826.64 is: 403,876.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,620.96 : 671,163.72 = 292,826.64 : x
  2. Step 2: Convert to fraction form
    486,620.96/671,163.72 = 292,826.64/x
  3. Step 3: Cross multiply
    486,620.96x = 671,163.72 × 292,826.64
  4. Step 4: Simplify right side
    486,620.96x = 196,534,617,017.50
  5. Step 5: Solve for x
    x = 196,534,617,017.50/486,620.96
  6. Step 6: Final answer
    x = 403,876.19

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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.