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Finding the Fourth Proportional to 455,639.32, 628,675.86 and 264,537.64

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Solution

The fourth proportional to 455,639.32, 628,675.86 and 264,537.64 is: 365,000.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,639.32 : 628,675.86 = 264,537.64 : x
  2. Step 2: Convert to fraction form
    455,639.32/628,675.86 = 264,537.64/x
  3. Step 3: Cross multiply
    455,639.32x = 628,675.86 × 264,537.64
  4. Step 4: Simplify right side
    455,639.32x = 166,308,428,329.37
  5. Step 5: Solve for x
    x = 166,308,428,329.37/455,639.32
  6. Step 6: Final answer
    x = 365,000.17

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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.