Home / 439,738.80-659,867.40-290,410.80

Finding the Fourth Proportional to 439,738.80, 659,867.40 and 290,410.80

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Solution

The fourth proportional to 439,738.80, 659,867.40 and 290,410.80 is: 435,787.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,738.80 : 659,867.40 = 290,410.80 : x
  2. Step 2: Convert to fraction form
    439,738.80/659,867.40 = 290,410.80/x
  3. Step 3: Cross multiply
    439,738.80x = 659,867.40 × 290,410.80
  4. Step 4: Simplify right side
    439,738.80x = 191,632,619,527.92
  5. Step 5: Solve for x
    x = 191,632,619,527.92/439,738.80
  6. Step 6: Final answer
    x = 435,787.38

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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.