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Finding the Fourth Proportional to 490,903.85, 677,451.35 and 276,042.04

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Solution

The fourth proportional to 490,903.85, 677,451.35 and 276,042.04 is: 380,940.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,903.85 : 677,451.35 = 276,042.04 : x
  2. Step 2: Convert to fraction form
    490,903.85/677,451.35 = 276,042.04/x
  3. Step 3: Cross multiply
    490,903.85x = 677,451.35 × 276,042.04
  4. Step 4: Simplify right side
    490,903.85x = 187,005,051,651.23
  5. Step 5: Solve for x
    x = 187,005,051,651.23/490,903.85
  6. Step 6: Final answer
    x = 380,940.28

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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.