Home / 669,406.53-923,550.09-427,830.51

Finding the Fourth Proportional to 669,406.53, 923,550.09 and 427,830.51

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Solution

The fourth proportional to 669,406.53, 923,550.09 and 427,830.51 is: 590,258.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,406.53 : 923,550.09 = 427,830.51 : x
  2. Step 2: Convert to fraction form
    669,406.53/923,550.09 = 427,830.51/x
  3. Step 3: Cross multiply
    669,406.53x = 923,550.09 × 427,830.51
  4. Step 4: Simplify right side
    669,406.53x = 395,122,906,015.25
  5. Step 5: Solve for x
    x = 395,122,906,015.25/669,406.53
  6. Step 6: Final answer
    x = 590,258.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.