Home / 428,709.74-591,576.80-247,480.06

Finding the Fourth Proportional to 428,709.74, 591,576.80 and 247,480.06

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Solution

The fourth proportional to 428,709.74, 591,576.80 and 247,480.06 is: 341,497.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,709.74 : 591,576.80 = 247,480.06 : x
  2. Step 2: Convert to fraction form
    428,709.74/591,576.80 = 247,480.06/x
  3. Step 3: Cross multiply
    428,709.74x = 591,576.80 × 247,480.06
  4. Step 4: Simplify right side
    428,709.74x = 146,403,461,958.61
  5. Step 5: Solve for x
    x = 146,403,461,958.61/428,709.74
  6. Step 6: Final answer
    x = 341,497.87

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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.