Home / 405,743.12-560,384.97-276,457.40

Finding the Fourth Proportional to 405,743.12, 560,384.97 and 276,457.40

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Solution

The fourth proportional to 405,743.12, 560,384.97 and 276,457.40 is: 381,824.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,743.12 : 560,384.97 = 276,457.40 : x
  2. Step 2: Convert to fraction form
    405,743.12/560,384.97 = 276,457.40/x
  3. Step 3: Cross multiply
    405,743.12x = 560,384.97 × 276,457.40
  4. Step 4: Simplify right side
    405,743.12x = 154,922,571,805.28
  5. Step 5: Solve for x
    x = 154,922,571,805.28/405,743.12
  6. Step 6: Final answer
    x = 381,824.27

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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.