Home / 1,328,536.09-1,993,120.34-429,977.83

Finding the Fourth Proportional to 1,328,536.09, 1,993,120.34 and 429,977.83

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Solution

The fourth proportional to 1,328,536.09, 1,993,120.34 and 429,977.83 is: 645,069.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,536.09 : 1,993,120.34 = 429,977.83 : x
  2. Step 2: Convert to fraction form
    1,328,536.09/1,993,120.34 = 429,977.83/x
  3. Step 3: Cross multiply
    1,328,536.09x = 1,993,120.34 × 429,977.83
  4. Step 4: Simplify right side
    1,328,536.09x = 856,997,558,722.06
  5. Step 5: Solve for x
    x = 856,997,558,722.06/1,328,536.09
  6. Step 6: Final answer
    x = 645,069.08

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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.