Home / 919,571.32-1,378,462.38-439,674.40

Finding the Fourth Proportional to 919,571.32, 1,378,462.38 and 439,674.40

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Solution

The fourth proportional to 919,571.32, 1,378,462.38 and 439,674.40 is: 659,083.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,571.32 : 1,378,462.38 = 439,674.40 : x
  2. Step 2: Convert to fraction form
    919,571.32/1,378,462.38 = 439,674.40/x
  3. Step 3: Cross multiply
    919,571.32x = 1,378,462.38 × 439,674.40
  4. Step 4: Simplify right side
    919,571.32x = 606,074,619,849.07
  5. Step 5: Solve for x
    x = 606,074,619,849.07/919,571.32
  6. Step 6: Final answer
    x = 659,083.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.