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Finding the Fourth Proportional to 490,482.05, 676,859.22 and 275,658.44

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Solution

The fourth proportional to 490,482.05, 676,859.22 and 275,658.44 is: 380,405.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,482.05 : 676,859.22 = 275,658.44 : x
  2. Step 2: Convert to fraction form
    490,482.05/676,859.22 = 275,658.44/x
  3. Step 3: Cross multiply
    490,482.05x = 676,859.22 × 275,658.44
  4. Step 4: Simplify right side
    490,482.05x = 186,581,953,300.52
  5. Step 5: Solve for x
    x = 186,581,953,300.52/490,482.05
  6. Step 6: Final answer
    x = 380,405.27

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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.