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Finding the Fourth Proportional to 455,672.72, 628,720.84 and 264,572.72

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Solution

The fourth proportional to 455,672.72, 628,720.84 and 264,572.72 is: 365,047.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,672.72 : 628,720.84 = 264,572.72 : x
  2. Step 2: Convert to fraction form
    455,672.72/628,720.84 = 264,572.72/x
  3. Step 3: Cross multiply
    455,672.72x = 628,720.84 × 264,572.72
  4. Step 4: Simplify right side
    455,672.72x = 166,342,382,759.49
  5. Step 5: Solve for x
    x = 166,342,382,759.49/455,672.72
  6. Step 6: Final answer
    x = 365,047.93

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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.