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Finding the Fourth Proportional to 455,638.32, 628,674.48 and 264,536.64

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Solution

The fourth proportional to 455,638.32, 628,674.48 and 264,536.64 is: 364,998.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,638.32 : 628,674.48 = 264,536.64 : x
  2. Step 2: Convert to fraction form
    455,638.32/628,674.48 = 264,536.64/x
  3. Step 3: Cross multiply
    455,638.32x = 628,674.48 × 264,536.64
  4. Step 4: Simplify right side
    455,638.32x = 166,307,434,592.95
  5. Step 5: Solve for x
    x = 166,307,434,592.95/455,638.32
  6. Step 6: Final answer
    x = 364,998.79

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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.