Home / 405,923.54-609,448.46-255,720.38

Finding the Fourth Proportional to 405,923.54, 609,448.46 and 255,720.38

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Solution

The fourth proportional to 405,923.54, 609,448.46 and 255,720.38 is: 383,935.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,923.54 : 609,448.46 = 255,720.38 : x
  2. Step 2: Convert to fraction form
    405,923.54/609,448.46 = 255,720.38/x
  3. Step 3: Cross multiply
    405,923.54x = 609,448.46 × 255,720.38
  4. Step 4: Simplify right side
    405,923.54x = 155,848,387,455.77
  5. Step 5: Solve for x
    x = 155,848,387,455.77/405,923.54
  6. Step 6: Final answer
    x = 383,935.33

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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.