Home / 485,847.57-670,288.89-281,784.06

Finding the Fourth Proportional to 485,847.57, 670,288.89 and 281,784.06

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Solution

The fourth proportional to 485,847.57, 670,288.89 and 281,784.06 is: 388,757.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,847.57 : 670,288.89 = 281,784.06 : x
  2. Step 2: Convert to fraction form
    485,847.57/670,288.89 = 281,784.06/x
  3. Step 3: Cross multiply
    485,847.57x = 670,288.89 × 281,784.06
  4. Step 4: Simplify right side
    485,847.57x = 188,876,724,797.09
  5. Step 5: Solve for x
    x = 188,876,724,797.09/485,847.57
  6. Step 6: Final answer
    x = 388,757.17

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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.