Home / 408,927.21-613,415.33-128,444.46

Finding the Fourth Proportional to 408,927.21, 613,415.33 and 128,444.46

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Solution

The fourth proportional to 408,927.21, 613,415.33 and 128,444.46 is: 192,674.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,927.21 : 613,415.33 = 128,444.46 : x
  2. Step 2: Convert to fraction form
    408,927.21/613,415.33 = 128,444.46/x
  3. Step 3: Cross multiply
    408,927.21x = 613,415.33 × 128,444.46
  4. Step 4: Simplify right side
    408,927.21x = 78,789,800,175.35
  5. Step 5: Solve for x
    x = 78,789,800,175.35/408,927.21
  6. Step 6: Final answer
    x = 192,674.39

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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.