Home / 627,185.12-865,471.68-347,779.86

Finding the Fourth Proportional to 627,185.12, 865,471.68 and 347,779.86

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Solution

The fourth proportional to 627,185.12, 865,471.68 and 347,779.86 is: 479,911.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,185.12 : 865,471.68 = 347,779.86 : x
  2. Step 2: Convert to fraction form
    627,185.12/865,471.68 = 347,779.86/x
  3. Step 3: Cross multiply
    627,185.12x = 865,471.68 × 347,779.86
  4. Step 4: Simplify right side
    627,185.12x = 300,993,619,704.37
  5. Step 5: Solve for x
    x = 300,993,619,704.37/627,185.12
  6. Step 6: Final answer
    x = 479,911.93

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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.