Home / 1,328,493.80-1,992,254.70-430,171.40

Finding the Fourth Proportional to 1,328,493.80, 1,992,254.70 and 430,171.40

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Solution

The fourth proportional to 1,328,493.80, 1,992,254.70 and 430,171.40 is: 645,099.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,493.80 : 1,992,254.70 = 430,171.40 : x
  2. Step 2: Convert to fraction form
    1,328,493.80/1,992,254.70 = 430,171.40/x
  3. Step 3: Cross multiply
    1,328,493.80x = 1,992,254.70 × 430,171.40
  4. Step 4: Simplify right side
    1,328,493.80x = 857,010,993,455.58
  5. Step 5: Solve for x
    x = 857,010,993,455.58/1,328,493.80
  6. Step 6: Final answer
    x = 645,099.73

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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.