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Finding the Fourth Proportional to 548,630.76, 757,539.94 and 421,104.36

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Solution

The fourth proportional to 548,630.76, 757,539.94 and 421,104.36 is: 581,453.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,630.76 : 757,539.94 = 421,104.36 : x
  2. Step 2: Convert to fraction form
    548,630.76/757,539.94 = 421,104.36/x
  3. Step 3: Cross multiply
    548,630.76x = 757,539.94 × 421,104.36
  4. Step 4: Simplify right side
    548,630.76x = 319,003,371,608.14
  5. Step 5: Solve for x
    x = 319,003,371,608.14/548,630.76
  6. Step 6: Final answer
    x = 581,453.67

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1.5x scale

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.