Home / 419,823.60-629,735.40-395,329.20

Finding the Fourth Proportional to 419,823.60, 629,735.40 and 395,329.20

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Solution

The fourth proportional to 419,823.60, 629,735.40 and 395,329.20 is: 592,993.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,823.60 : 629,735.40 = 395,329.20 : x
  2. Step 2: Convert to fraction form
    419,823.60/629,735.40 = 395,329.20/x
  3. Step 3: Cross multiply
    419,823.60x = 629,735.40 × 395,329.20
  4. Step 4: Simplify right side
    419,823.60x = 248,952,791,893.68
  5. Step 5: Solve for x
    x = 248,952,791,893.68/419,823.60
  6. Step 6: Final answer
    x = 592,993.80

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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.