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Finding the Fourth Proportional to 455,514.39, 628,686.77 and 264,638.50

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Solution

The fourth proportional to 455,514.39, 628,686.77 and 264,638.50 is: 365,245.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,514.39 : 628,686.77 = 264,638.50 : x
  2. Step 2: Convert to fraction form
    455,514.39/628,686.77 = 264,638.50/x
  3. Step 3: Cross multiply
    455,514.39x = 628,686.77 × 264,638.50
  4. Step 4: Simplify right side
    455,514.39x = 166,374,723,782.65
  5. Step 5: Solve for x
    x = 166,374,723,782.65/455,514.39
  6. Step 6: Final answer
    x = 365,245.81

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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.