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Finding the Fourth Proportional to 490,884.94, 677,407.75 and 276,019.48

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Solution

The fourth proportional to 490,884.94, 677,407.75 and 276,019.48 is: 380,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,884.94 : 677,407.75 = 276,019.48 : x
  2. Step 2: Convert to fraction form
    490,884.94/677,407.75 = 276,019.48/x
  3. Step 3: Cross multiply
    490,884.94x = 677,407.75 × 276,019.48
  4. Step 4: Simplify right side
    490,884.94x = 186,977,734,902.97
  5. Step 5: Solve for x
    x = 186,977,734,902.97/490,884.94
  6. Step 6: Final answer
    x = 380,899.31

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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.