Home / 645,169.62-890,383.89-387,056.25

Finding the Fourth Proportional to 645,169.62, 890,383.89 and 387,056.25

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Solution

The fourth proportional to 645,169.62, 890,383.89 and 387,056.25 is: 534,167.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,169.62 : 890,383.89 = 387,056.25 : x
  2. Step 2: Convert to fraction form
    645,169.62/890,383.89 = 387,056.25/x
  3. Step 3: Cross multiply
    645,169.62x = 890,383.89 × 387,056.25
  4. Step 4: Simplify right side
    645,169.62x = 344,628,649,523.81
  5. Step 5: Solve for x
    x = 344,628,649,523.81/645,169.62
  6. Step 6: Final answer
    x = 534,167.51

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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.