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Finding the Fourth Proportional to 685,590.62, 945,997.56 and 427,548.51

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Solution

The fourth proportional to 685,590.62, 945,997.56 and 427,548.51 is: 589,943.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,590.62 : 945,997.56 = 427,548.51 : x
  2. Step 2: Convert to fraction form
    685,590.62/945,997.56 = 427,548.51/x
  3. Step 3: Cross multiply
    685,590.62x = 945,997.56 × 427,548.51
  4. Step 4: Simplify right side
    685,590.62x = 404,459,847,241.64
  5. Step 5: Solve for x
    x = 404,459,847,241.64/685,590.62
  6. Step 6: Final answer
    x = 589,943.68

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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.