Home / 1,221,678.98-1,685,917.20-677,813.46

Finding the Fourth Proportional to 1,221,678.98, 1,685,917.20 and 677,813.46

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Solution

The fourth proportional to 1,221,678.98, 1,685,917.20 and 677,813.46 is: 935,382.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,678.98 : 1,685,917.20 = 677,813.46 : x
  2. Step 2: Convert to fraction form
    1,221,678.98/1,685,917.20 = 677,813.46/x
  3. Step 3: Cross multiply
    1,221,678.98x = 1,685,917.20 × 677,813.46
  4. Step 4: Simplify right side
    1,221,678.98x = 1,142,737,370,605.51
  5. Step 5: Solve for x
    x = 1,142,737,370,605.51/1,221,678.98
  6. Step 6: Final answer
    x = 935,382.69

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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.