Home / 1,221,006.38-1,684,988.80-677,225.43

Finding the Fourth Proportional to 1,221,006.38, 1,684,988.80 and 677,225.43

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Solution

The fourth proportional to 1,221,006.38, 1,684,988.80 and 677,225.43 is: 934,571.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,006.38 : 1,684,988.80 = 677,225.43 : x
  2. Step 2: Convert to fraction form
    1,221,006.38/1,684,988.80 = 677,225.43/x
  3. Step 3: Cross multiply
    1,221,006.38x = 1,684,988.80 × 677,225.43
  4. Step 4: Simplify right side
    1,221,006.38x = 1,141,117,262,932.12
  5. Step 5: Solve for x
    x = 1,141,117,262,932.12/1,221,006.38
  6. Step 6: Final answer
    x = 934,571.09

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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.