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Finding the Fourth Proportional to 490,483.05, 676,860.60 and 275,659.44

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Solution

The fourth proportional to 490,483.05, 676,860.60 and 275,659.44 is: 380,406.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,483.05 : 676,860.60 = 275,659.44 : x
  2. Step 2: Convert to fraction form
    490,483.05/676,860.60 = 275,659.44/x
  3. Step 3: Cross multiply
    490,483.05x = 676,860.60 × 275,659.44
  4. Step 4: Simplify right side
    490,483.05x = 186,583,013,954.06
  5. Step 5: Solve for x
    x = 186,583,013,954.06/490,483.05
  6. Step 6: Final answer
    x = 380,406.65

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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.