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Finding the Fourth Proportional to 490,295.47, 676,534.10 and 275,394.37

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Solution

The fourth proportional to 490,295.47, 676,534.10 and 275,394.37 is: 380,002.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,295.47 : 676,534.10 = 275,394.37 : x
  2. Step 2: Convert to fraction form
    490,295.47/676,534.10 = 275,394.37/x
  3. Step 3: Cross multiply
    490,295.47x = 676,534.10 × 275,394.37
  4. Step 4: Simplify right side
    490,295.47x = 186,313,682,253.02
  5. Step 5: Solve for x
    x = 186,313,682,253.02/490,295.47
  6. Step 6: Final answer
    x = 380,002.86

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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.