Home / 1,187,786.14-1,638,759.24-671,489.98

Finding the Fourth Proportional to 1,187,786.14, 1,638,759.24 and 671,489.98

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Solution

The fourth proportional to 1,187,786.14, 1,638,759.24 and 671,489.98 is: 926,438.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,786.14 : 1,638,759.24 = 671,489.98 : x
  2. Step 2: Convert to fraction form
    1,187,786.14/1,638,759.24 = 671,489.98/x
  3. Step 3: Cross multiply
    1,187,786.14x = 1,638,759.24 × 671,489.98
  4. Step 4: Simplify right side
    1,187,786.14x = 1,100,410,409,292.42
  5. Step 5: Solve for x
    x = 1,100,410,409,292.42/1,187,786.14
  6. Step 6: Final answer
    x = 926,438.16

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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.