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Finding the Fourth Proportional to 461,739.64, 635,779.38 and 393,603.88

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Solution

The fourth proportional to 461,739.64, 635,779.38 and 393,603.88 is: 541,961.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,739.64 : 635,779.38 = 393,603.88 : x
  2. Step 2: Convert to fraction form
    461,739.64/635,779.38 = 393,603.88/x
  3. Step 3: Cross multiply
    461,739.64x = 635,779.38 × 393,603.88
  4. Step 4: Simplify right side
    461,739.64x = 250,245,230,791.99
  5. Step 5: Solve for x
    x = 250,245,230,791.99/461,739.64
  6. Step 6: Final answer
    x = 541,961.77

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1.5x scale

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.