Home / 505,439.77-697,535.35-276,018.40

Finding the Fourth Proportional to 505,439.77, 697,535.35 and 276,018.40

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Solution

The fourth proportional to 505,439.77, 697,535.35 and 276,018.40 is: 380,920.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,439.77 : 697,535.35 = 276,018.40 : x
  2. Step 2: Convert to fraction form
    505,439.77/697,535.35 = 276,018.40/x
  3. Step 3: Cross multiply
    505,439.77x = 697,535.35 × 276,018.40
  4. Step 4: Simplify right side
    505,439.77x = 192,532,589,870.35
  5. Step 5: Solve for x
    x = 192,532,589,870.35/505,439.77
  6. Step 6: Final answer
    x = 380,920.94

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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.