Home / 1,405,943-1,940,237.40-862,379.12

Finding the Fourth Proportional to 1,405,943, 1,940,237.40 and 862,379.12

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Solution

The fourth proportional to 1,405,943, 1,940,237.40 and 862,379.12 is: 1,190,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,943 : 1,940,237.40 = 862,379.12 : x
  2. Step 2: Convert to fraction form
    1,405,943/1,940,237.40 = 862,379.12/x
  3. Step 3: Cross multiply
    1,405,943x = 1,940,237.40 × 862,379.12
  4. Step 4: Simplify right side
    1,405,943x = 1,673,220,221,603.09
  5. Step 5: Solve for x
    x = 1,673,220,221,603.09/1,405,943
  6. Step 6: Final answer
    x = 1,190,105.30

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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.