Home / 1,405,669.09-2,108,709.72-445,804.57

Finding the Fourth Proportional to 1,405,669.09, 2,108,709.72 and 445,804.57

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Solution

The fourth proportional to 1,405,669.09, 2,108,709.72 and 445,804.57 is: 668,772.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,669.09 : 2,108,709.72 = 445,804.57 : x
  2. Step 2: Convert to fraction form
    1,405,669.09/2,108,709.72 = 445,804.57/x
  3. Step 3: Cross multiply
    1,405,669.09x = 2,108,709.72 × 445,804.57
  4. Step 4: Simplify right side
    1,405,669.09x = 940,072,429,979.42
  5. Step 5: Solve for x
    x = 940,072,429,979.42/1,405,669.09
  6. Step 6: Final answer
    x = 668,772.21

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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.