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Finding the Fourth Proportional to 637,489.01, 879,736.92 and 347,104.01

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Solution

The fourth proportional to 637,489.01, 879,736.92 and 347,104.01 is: 479,004.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,489.01 : 879,736.92 = 347,104.01 : x
  2. Step 2: Convert to fraction form
    637,489.01/879,736.92 = 347,104.01/x
  3. Step 3: Cross multiply
    637,489.01x = 879,736.92 × 347,104.01
  4. Step 4: Simplify right side
    637,489.01x = 305,360,214,876.39
  5. Step 5: Solve for x
    x = 305,360,214,876.39/637,489.01
  6. Step 6: Final answer
    x = 479,004.67

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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.