Home / 1,405,039.15-1,939,000.97-861,069.83

Finding the Fourth Proportional to 1,405,039.15, 1,939,000.97 and 861,069.83

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Solution

The fourth proportional to 1,405,039.15, 1,939,000.97 and 861,069.83 is: 1,188,305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,039.15 : 1,939,000.97 = 861,069.83 : x
  2. Step 2: Convert to fraction form
    1,405,039.15/1,939,000.97 = 861,069.83/x
  3. Step 3: Cross multiply
    1,405,039.15x = 1,939,000.97 × 861,069.83
  4. Step 4: Simplify right side
    1,405,039.15x = 1,669,615,231,302.39
  5. Step 5: Solve for x
    x = 1,669,615,231,302.39/1,405,039.15
  6. Step 6: Final answer
    x = 1,188,305.14

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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.