Home / 1,405,041.65-1,939,004.42-861,072.33

Finding the Fourth Proportional to 1,405,041.65, 1,939,004.42 and 861,072.33

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Solution

The fourth proportional to 1,405,041.65, 1,939,004.42 and 861,072.33 is: 1,188,308.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,041.65 : 1,939,004.42 = 861,072.33 : x
  2. Step 2: Convert to fraction form
    1,405,041.65/1,939,004.42 = 861,072.33/x
  3. Step 3: Cross multiply
    1,405,041.65x = 1,939,004.42 × 861,072.33
  4. Step 4: Simplify right side
    1,405,041.65x = 1,669,623,049,504.34
  5. Step 5: Solve for x
    x = 1,669,623,049,504.34/1,405,041.65
  6. Step 6: Final answer
    x = 1,188,308.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.