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Finding the Fourth Proportional to 490,260.53, 676,627.64 and 275,416.94

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Solution

The fourth proportional to 490,260.53, 676,627.64 and 275,416.94 is: 380,113.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,260.53 : 676,627.64 = 275,416.94 : x
  2. Step 2: Convert to fraction form
    490,260.53/676,627.64 = 275,416.94/x
  3. Step 3: Cross multiply
    490,260.53x = 676,627.64 × 275,416.94
  4. Step 4: Simplify right side
    490,260.53x = 186,354,712,751.14
  5. Step 5: Solve for x
    x = 186,354,712,751.14/490,260.53
  6. Step 6: Final answer
    x = 380,113.64

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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.