Home / 428,546.66-642,825.48-295,391.18

Finding the Fourth Proportional to 428,546.66, 642,825.48 and 295,391.18

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Solution

The fourth proportional to 428,546.66, 642,825.48 and 295,391.18 is: 443,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,546.66 : 642,825.48 = 295,391.18 : x
  2. Step 2: Convert to fraction form
    428,546.66/642,825.48 = 295,391.18/x
  3. Step 3: Cross multiply
    428,546.66x = 642,825.48 × 295,391.18
  4. Step 4: Simplify right side
    428,546.66x = 189,884,977,071.27
  5. Step 5: Solve for x
    x = 189,884,977,071.27/428,546.66
  6. Step 6: Final answer
    x = 443,090.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.