Home / 419,975.09-630,257.89-379,821.77

Finding the Fourth Proportional to 419,975.09, 630,257.89 and 379,821.77

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Solution

The fourth proportional to 419,975.09, 630,257.89 and 379,821.77 is: 569,999.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,975.09 : 630,257.89 = 379,821.77 : x
  2. Step 2: Convert to fraction form
    419,975.09/630,257.89 = 379,821.77/x
  3. Step 3: Cross multiply
    419,975.09x = 630,257.89 × 379,821.77
  4. Step 4: Simplify right side
    419,975.09x = 239,385,667,336.27
  5. Step 5: Solve for x
    x = 239,385,667,336.27/419,975.09
  6. Step 6: Final answer
    x = 569,999.68

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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.