Home / 1,231,378.40-1,847,262-521,410.88

Finding the Fourth Proportional to 1,231,378.40, 1,847,262 and 521,410.88

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Solution

The fourth proportional to 1,231,378.40, 1,847,262 and 521,410.88 is: 782,198.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,378.40 : 1,847,262 = 521,410.88 : x
  2. Step 2: Convert to fraction form
    1,231,378.40/1,847,262 = 521,410.88/x
  3. Step 3: Cross multiply
    1,231,378.40x = 1,847,262 × 521,410.88
  4. Step 4: Simplify right side
    1,231,378.40x = 963,182,505,010.56
  5. Step 5: Solve for x
    x = 963,182,505,010.56/1,231,378.40
  6. Step 6: Final answer
    x = 782,198.64

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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.