Home / 379,520.06-569,086.56-126,709.67

Finding the Fourth Proportional to 379,520.06, 569,086.56 and 126,709.67

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Solution

The fourth proportional to 379,520.06, 569,086.56 and 126,709.67 is: 189,999.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,520.06 : 569,086.56 = 126,709.67 : x
  2. Step 2: Convert to fraction form
    379,520.06/569,086.56 = 126,709.67/x
  3. Step 3: Cross multiply
    379,520.06x = 569,086.56 × 126,709.67
  4. Step 4: Simplify right side
    379,520.06x = 72,108,771,641.75
  5. Step 5: Solve for x
    x = 72,108,771,641.75/379,520.06
  6. Step 6: Final answer
    x = 189,999.90

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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.