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Finding the Fourth Proportional to 490,762.30, 677,247.90 and 275,903.32

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Solution

The fourth proportional to 490,762.30, 677,247.90 and 275,903.32 is: 380,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,762.30 : 677,247.90 = 275,903.32 : x
  2. Step 2: Convert to fraction form
    490,762.30/677,247.90 = 275,903.32/x
  3. Step 3: Cross multiply
    490,762.30x = 677,247.90 × 275,903.32
  4. Step 4: Simplify right side
    490,762.30x = 186,854,944,073.03
  5. Step 5: Solve for x
    x = 186,854,944,073.03/490,762.30
  6. Step 6: Final answer
    x = 380,744.29

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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.