Home / 419,914.20-629,681.70-120,326.28

Finding the Fourth Proportional to 419,914.20, 629,681.70 and 120,326.28

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Solution

The fourth proportional to 419,914.20, 629,681.70 and 120,326.28 is: 180,435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,914.20 : 629,681.70 = 120,326.28 : x
  2. Step 2: Convert to fraction form
    419,914.20/629,681.70 = 120,326.28/x
  3. Step 3: Cross multiply
    419,914.20x = 629,681.70 × 120,326.28
  4. Step 4: Simplify right side
    419,914.20x = 75,767,256,545.08
  5. Step 5: Solve for x
    x = 75,767,256,545.08/419,914.20
  6. Step 6: Final answer
    x = 180,435.09

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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.