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Finding the Fourth Proportional to 490,759.30, 677,243.76 and 275,900.32

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Solution

The fourth proportional to 490,759.30, 677,243.76 and 275,900.32 is: 380,740.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,759.30 : 677,243.76 = 275,900.32 : x
  2. Step 2: Convert to fraction form
    490,759.30/677,243.76 = 275,900.32/x
  3. Step 3: Cross multiply
    490,759.30x = 677,243.76 × 275,900.32
  4. Step 4: Simplify right side
    490,759.30x = 186,851,770,102.00
  5. Step 5: Solve for x
    x = 186,851,770,102.00/490,759.30
  6. Step 6: Final answer
    x = 380,740.15

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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.