Home / 1,428,215.59-1,971,065.28-783,761.41

Finding the Fourth Proportional to 1,428,215.59, 1,971,065.28 and 783,761.41

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Solution

The fourth proportional to 1,428,215.59, 1,971,065.28 and 783,761.41 is: 1,081,660.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,215.59 : 1,971,065.28 = 783,761.41 : x
  2. Step 2: Convert to fraction form
    1,428,215.59/1,971,065.28 = 783,761.41/x
  3. Step 3: Cross multiply
    1,428,215.59x = 1,971,065.28 × 783,761.41
  4. Step 4: Simplify right side
    1,428,215.59x = 1,544,844,903,054.85
  5. Step 5: Solve for x
    x = 1,544,844,903,054.85/1,428,215.59
  6. Step 6: Final answer
    x = 1,081,660.86

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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.