Home / 685,429.14-945,904.77-383,622.42

Finding the Fourth Proportional to 685,429.14, 945,904.77 and 383,622.42

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Solution

The fourth proportional to 685,429.14, 945,904.77 and 383,622.42 is: 529,405.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,429.14 : 945,904.77 = 383,622.42 : x
  2. Step 2: Convert to fraction form
    685,429.14/945,904.77 = 383,622.42/x
  3. Step 3: Cross multiply
    685,429.14x = 945,904.77 × 383,622.42
  4. Step 4: Simplify right side
    685,429.14x = 362,870,276,956.94
  5. Step 5: Solve for x
    x = 362,870,276,956.94/685,429.14
  6. Step 6: Final answer
    x = 529,405.97

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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.