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Finding the Fourth Proportional to 490,285.14, 676,004.84 and 354,101.46

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Solution

The fourth proportional to 490,285.14, 676,004.84 and 354,101.46 is: 488,234.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,285.14 : 676,004.84 = 354,101.46 : x
  2. Step 2: Convert to fraction form
    490,285.14/676,004.84 = 354,101.46/x
  3. Step 3: Cross multiply
    490,285.14x = 676,004.84 × 354,101.46
  4. Step 4: Simplify right side
    490,285.14x = 239,374,300,811.07
  5. Step 5: Solve for x
    x = 239,374,300,811.07/490,285.14
  6. Step 6: Final answer
    x = 488,234.87

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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.