Home / 782,907.68-1,080,376.44-443,378.36

Finding the Fourth Proportional to 782,907.68, 1,080,376.44 and 443,378.36

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Solution

The fourth proportional to 782,907.68, 1,080,376.44 and 443,378.36 is: 611,841.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,907.68 : 1,080,376.44 = 443,378.36 : x
  2. Step 2: Convert to fraction form
    782,907.68/1,080,376.44 = 443,378.36/x
  3. Step 3: Cross multiply
    782,907.68x = 1,080,376.44 × 443,378.36
  4. Step 4: Simplify right side
    782,907.68x = 479,015,534,149.84
  5. Step 5: Solve for x
    x = 479,015,534,149.84/782,907.68
  6. Step 6: Final answer
    x = 611,841.66

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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.