Home / 443,436.58-665,130.26-394,081.45

Finding the Fourth Proportional to 443,436.58, 665,130.26 and 394,081.45

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Solution

The fourth proportional to 443,436.58, 665,130.26 and 394,081.45 is: 591,100.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,436.58 : 665,130.26 = 394,081.45 : x
  2. Step 2: Convert to fraction form
    443,436.58/665,130.26 = 394,081.45/x
  3. Step 3: Cross multiply
    443,436.58x = 665,130.26 × 394,081.45
  4. Step 4: Simplify right side
    443,436.58x = 262,115,499,255.06
  5. Step 5: Solve for x
    x = 262,115,499,255.06/443,436.58
  6. Step 6: Final answer
    x = 591,100.31

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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.