Home / 421,917.35-632,795.38-126,429.35

Finding the Fourth Proportional to 421,917.35, 632,795.38 and 126,429.35

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Solution

The fourth proportional to 421,917.35, 632,795.38 and 126,429.35 is: 189,619.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,917.35 : 632,795.38 = 126,429.35 : x
  2. Step 2: Convert to fraction form
    421,917.35/632,795.38 = 126,429.35/x
  3. Step 3: Cross multiply
    421,917.35x = 632,795.38 × 126,429.35
  4. Step 4: Simplify right side
    421,917.35x = 80,003,908,576.40
  5. Step 5: Solve for x
    x = 80,003,908,576.40/421,917.35
  6. Step 6: Final answer
    x = 189,619.86

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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.