Home / 427,779.47-590,380.58-320,161.25

Finding the Fourth Proportional to 427,779.47, 590,380.58 and 320,161.25

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Solution

The fourth proportional to 427,779.47, 590,380.58 and 320,161.25 is: 441,856.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,779.47 : 590,380.58 = 320,161.25 : x
  2. Step 2: Convert to fraction form
    427,779.47/590,380.58 = 320,161.25/x
  3. Step 3: Cross multiply
    427,779.47x = 590,380.58 × 320,161.25
  4. Step 4: Simplify right side
    427,779.47x = 189,016,984,468.53
  5. Step 5: Solve for x
    x = 189,016,984,468.53/427,779.47
  6. Step 6: Final answer
    x = 441,856.14

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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.