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Finding the Fourth Proportional to 490,626.36, 677,070.72 and 275,753.88

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Solution

The fourth proportional to 490,626.36, 677,070.72 and 275,753.88 is: 380,543.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,626.36 : 677,070.72 = 275,753.88 : x
  2. Step 2: Convert to fraction form
    490,626.36/677,070.72 = 275,753.88/x
  3. Step 3: Cross multiply
    490,626.36x = 677,070.72 × 275,753.88
  4. Step 4: Simplify right side
    490,626.36x = 186,704,878,074.39
  5. Step 5: Solve for x
    x = 186,704,878,074.39/490,626.36
  6. Step 6: Final answer
    x = 380,543.92

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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.