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Finding the Fourth Proportional to 682,636.40, 1,024,100.40 and 261,908.63

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Solution

The fourth proportional to 682,636.40, 1,024,100.40 and 261,908.63 is: 392,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,636.40 : 1,024,100.40 = 261,908.63 : x
  2. Step 2: Convert to fraction form
    682,636.40/1,024,100.40 = 261,908.63/x
  3. Step 3: Cross multiply
    682,636.40x = 1,024,100.40 × 261,908.63
  4. Step 4: Simplify right side
    682,636.40x = 268,220,727,625.95
  5. Step 5: Solve for x
    x = 268,220,727,625.95/682,636.40
  6. Step 6: Final answer
    x = 392,918.88

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1.5x scale

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.