Home / 1,221,964.92-1,686,267-678,124.44

Finding the Fourth Proportional to 1,221,964.92, 1,686,267 and 678,124.44

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Solution

The fourth proportional to 1,221,964.92, 1,686,267 and 678,124.44 is: 935,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,964.92 : 1,686,267 = 678,124.44 : x
  2. Step 2: Convert to fraction form
    1,221,964.92/1,686,267 = 678,124.44/x
  3. Step 3: Cross multiply
    1,221,964.92x = 1,686,267 × 678,124.44
  4. Step 4: Simplify right side
    1,221,964.92x = 1,143,498,865,065.48
  5. Step 5: Solve for x
    x = 1,143,498,865,065.48/1,221,964.92
  6. Step 6: Final answer
    x = 935,786.98

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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.