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Finding the Fourth Proportional to 490,512.96, 676,968 and 275,662.08

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Solution

The fourth proportional to 490,512.96, 676,968 and 275,662.08 is: 380,447.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,512.96 : 676,968 = 275,662.08 : x
  2. Step 2: Convert to fraction form
    490,512.96/676,968 = 275,662.08/x
  3. Step 3: Cross multiply
    490,512.96x = 676,968 × 275,662.08
  4. Step 4: Simplify right side
    490,512.96x = 186,614,406,973.44
  5. Step 5: Solve for x
    x = 186,614,406,973.44/490,512.96
  6. Step 6: Final answer
    x = 380,447.45

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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.