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Finding the Fourth Proportional to 455,406.56, 628,458.64 and 264,466.88

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Solution

The fourth proportional to 455,406.56, 628,458.64 and 264,466.88 is: 364,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,406.56 : 628,458.64 = 264,466.88 : x
  2. Step 2: Convert to fraction form
    455,406.56/628,458.64 = 264,466.88/x
  3. Step 3: Cross multiply
    455,406.56x = 628,458.64 × 264,466.88
  4. Step 4: Simplify right side
    455,406.56x = 166,206,495,729.84
  5. Step 5: Solve for x
    x = 166,206,495,729.84/455,406.56
  6. Step 6: Final answer
    x = 364,962.89

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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.