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Finding the Fourth Proportional to 455,653.96, 628,782.42 and 254,445.64

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Solution

The fourth proportional to 455,653.96, 628,782.42 and 254,445.64 is: 351,123.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,653.96 : 628,782.42 = 254,445.64 : x
  2. Step 2: Convert to fraction form
    455,653.96/628,782.42 = 254,445.64/x
  3. Step 3: Cross multiply
    455,653.96x = 628,782.42 × 254,445.64
  4. Step 4: Simplify right side
    455,653.96x = 159,990,945,277.65
  5. Step 5: Solve for x
    x = 159,990,945,277.65/455,653.96
  6. Step 6: Final answer
    x = 351,123.79

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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.