Home / 428,685.10-642,896.30-296,415.34

Finding the Fourth Proportional to 428,685.10, 642,896.30 and 296,415.34

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Solution

The fourth proportional to 428,685.10, 642,896.30 and 296,415.34 is: 444,532.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,685.10 : 642,896.30 = 296,415.34 : x
  2. Step 2: Convert to fraction form
    428,685.10/642,896.30 = 296,415.34/x
  3. Step 3: Cross multiply
    428,685.10x = 642,896.30 × 296,415.34
  4. Step 4: Simplify right side
    428,685.10x = 190,564,325,349.24
  5. Step 5: Solve for x
    x = 190,564,325,349.24/428,685.10
  6. Step 6: Final answer
    x = 444,532.19

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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.