Home / 420,834.60-631,251.90-263,548.20

Finding the Fourth Proportional to 420,834.60, 631,251.90 and 263,548.20

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Solution

The fourth proportional to 420,834.60, 631,251.90 and 263,548.20 is: 395,322.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,834.60 : 631,251.90 = 263,548.20 : x
  2. Step 2: Convert to fraction form
    420,834.60/631,251.90 = 263,548.20/x
  3. Step 3: Cross multiply
    420,834.60x = 631,251.90 × 263,548.20
  4. Step 4: Simplify right side
    420,834.60x = 166,365,301,991.58
  5. Step 5: Solve for x
    x = 166,365,301,991.58/420,834.60
  6. Step 6: Final answer
    x = 395,322.30

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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.