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Finding the Fourth Proportional to 490,553.67, 677,149.03 and 286,670.85

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Solution

The fourth proportional to 490,553.67, 677,149.03 and 286,670.85 is: 395,713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,553.67 : 677,149.03 = 286,670.85 : x
  2. Step 2: Convert to fraction form
    490,553.67/677,149.03 = 286,670.85/x
  3. Step 3: Cross multiply
    490,553.67x = 677,149.03 × 286,670.85
  4. Step 4: Simplify right side
    490,553.67x = 194,118,892,240.40
  5. Step 5: Solve for x
    x = 194,118,892,240.40/490,553.67
  6. Step 6: Final answer
    x = 395,713.87

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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.