Home / 1,420,869.40-2,131,254.96-355,920.64

Finding the Fourth Proportional to 1,420,869.40, 2,131,254.96 and 355,920.64

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Solution

The fourth proportional to 1,420,869.40, 2,131,254.96 and 355,920.64 is: 533,868.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,869.40 : 2,131,254.96 = 355,920.64 : x
  2. Step 2: Convert to fraction form
    1,420,869.40/2,131,254.96 = 355,920.64/x
  3. Step 3: Cross multiply
    1,420,869.40x = 2,131,254.96 × 355,920.64
  4. Step 4: Simplify right side
    1,420,869.40x = 758,557,629,366.37
  5. Step 5: Solve for x
    x = 758,557,629,366.37/1,420,869.40
  6. Step 6: Final answer
    x = 533,868.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.