Home / 430,469.96-645,606.32-126,785.57

Finding the Fourth Proportional to 430,469.96, 645,606.32 and 126,785.57

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Solution

The fourth proportional to 430,469.96, 645,606.32 and 126,785.57 is: 190,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,469.96 : 645,606.32 = 126,785.57 : x
  2. Step 2: Convert to fraction form
    430,469.96/645,606.32 = 126,785.57/x
  3. Step 3: Cross multiply
    430,469.96x = 645,606.32 × 126,785.57
  4. Step 4: Simplify right side
    430,469.96x = 81,853,561,414.84
  5. Step 5: Solve for x
    x = 81,853,561,414.84/430,469.96
  6. Step 6: Final answer
    x = 190,149.30

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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.