Home / 428,709.24-591,576.12-247,479.55

Finding the Fourth Proportional to 428,709.24, 591,576.12 and 247,479.55

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Solution

The fourth proportional to 428,709.24, 591,576.12 and 247,479.55 is: 341,497.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,709.24 : 591,576.12 = 247,479.55 : x
  2. Step 2: Convert to fraction form
    428,709.24/591,576.12 = 247,479.55/x
  3. Step 3: Cross multiply
    428,709.24x = 591,576.12 × 247,479.55
  4. Step 4: Simplify right side
    428,709.24x = 146,402,991,968.35
  5. Step 5: Solve for x
    x = 146,402,991,968.35/428,709.24
  6. Step 6: Final answer
    x = 341,497.17

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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.