Home / 505,790.25-697,982.40-276,342.61

Finding the Fourth Proportional to 505,790.25, 697,982.40 and 276,342.61

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Solution

The fourth proportional to 505,790.25, 697,982.40 and 276,342.61 is: 381,348.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,790.25 : 697,982.40 = 276,342.61 : x
  2. Step 2: Convert to fraction form
    505,790.25/697,982.40 = 276,342.61/x
  3. Step 3: Cross multiply
    505,790.25x = 697,982.40 × 276,342.61
  4. Step 4: Simplify right side
    505,790.25x = 192,882,276,405.11
  5. Step 5: Solve for x
    x = 192,882,276,405.11/505,790.25
  6. Step 6: Final answer
    x = 381,348.35

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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.