Home / 1,221,009-1,684,992.42-677,228.06

Finding the Fourth Proportional to 1,221,009, 1,684,992.42 and 677,228.06

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Solution

The fourth proportional to 1,221,009, 1,684,992.42 and 677,228.06 is: 934,574.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,009 : 1,684,992.42 = 677,228.06 : x
  2. Step 2: Convert to fraction form
    1,221,009/1,684,992.42 = 677,228.06/x
  3. Step 3: Cross multiply
    1,221,009x = 1,684,992.42 × 677,228.06
  4. Step 4: Simplify right side
    1,221,009x = 1,141,124,139,286.34
  5. Step 5: Solve for x
    x = 1,141,124,139,286.34/1,221,009
  6. Step 6: Final answer
    x = 934,574.72

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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.