Home / 405,742.12-560,383.59-276,456.40

Finding the Fourth Proportional to 405,742.12, 560,383.59 and 276,456.40

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Solution

The fourth proportional to 405,742.12, 560,383.59 and 276,456.40 is: 381,822.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,742.12 : 560,383.59 = 276,456.40 : x
  2. Step 2: Convert to fraction form
    405,742.12/560,383.59 = 276,456.40/x
  3. Step 3: Cross multiply
    405,742.12x = 560,383.59 × 276,456.40
  4. Step 4: Simplify right side
    405,742.12x = 154,921,629,910.48
  5. Step 5: Solve for x
    x = 154,921,629,910.48/405,742.12
  6. Step 6: Final answer
    x = 381,822.89

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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.