Home / 1,328,536.59-1,993,121.09-429,978.33

Finding the Fourth Proportional to 1,328,536.59, 1,993,121.09 and 429,978.33

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Solution

The fourth proportional to 1,328,536.59, 1,993,121.09 and 429,978.33 is: 645,069.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,536.59 : 1,993,121.09 = 429,978.33 : x
  2. Step 2: Convert to fraction form
    1,328,536.59/1,993,121.09 = 429,978.33/x
  3. Step 3: Cross multiply
    1,328,536.59x = 1,993,121.09 × 429,978.33
  4. Step 4: Simplify right side
    1,328,536.59x = 856,998,875,616.09
  5. Step 5: Solve for x
    x = 856,998,875,616.09/1,328,536.59
  6. Step 6: Final answer
    x = 645,069.83

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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.