Home / 1,221,858.76-1,686,084.07-677,960.07

Finding the Fourth Proportional to 1,221,858.76, 1,686,084.07 and 677,960.07

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Solution

The fourth proportional to 1,221,858.76, 1,686,084.07 and 677,960.07 is: 935,539.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,858.76 : 1,686,084.07 = 677,960.07 : x
  2. Step 2: Convert to fraction form
    1,221,858.76/1,686,084.07 = 677,960.07/x
  3. Step 3: Cross multiply
    1,221,858.76x = 1,686,084.07 × 677,960.07
  4. Step 4: Simplify right side
    1,221,858.76x = 1,143,097,674,123.09
  5. Step 5: Solve for x
    x = 1,143,097,674,123.09/1,221,858.76
  6. Step 6: Final answer
    x = 935,539.94

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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.