Home / 1,221,866.89-1,686,095.27-677,968.21

Finding the Fourth Proportional to 1,221,866.89, 1,686,095.27 and 677,968.21

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Solution

The fourth proportional to 1,221,866.89, 1,686,095.27 and 677,968.21 is: 935,551.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,866.89 : 1,686,095.27 = 677,968.21 : x
  2. Step 2: Convert to fraction form
    1,221,866.89/1,686,095.27 = 677,968.21/x
  3. Step 3: Cross multiply
    1,221,866.89x = 1,686,095.27 × 677,968.21
  4. Step 4: Simplify right side
    1,221,866.89x = 1,143,118,983,660.89
  5. Step 5: Solve for x
    x = 1,143,118,983,660.89/1,221,866.89
  6. Step 6: Final answer
    x = 935,551.16

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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.