Home / 1,420,554.66-1,961,010.81-905,015.57

Finding the Fourth Proportional to 1,420,554.66, 1,961,010.81 and 905,015.57

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Solution

The fourth proportional to 1,420,554.66, 1,961,010.81 and 905,015.57 is: 1,249,332.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,554.66 : 1,961,010.81 = 905,015.57 : x
  2. Step 2: Convert to fraction form
    1,420,554.66/1,961,010.81 = 905,015.57/x
  3. Step 3: Cross multiply
    1,420,554.66x = 1,961,010.81 × 905,015.57
  4. Step 4: Simplify right side
    1,420,554.66x = 1,774,745,306,183.26
  5. Step 5: Solve for x
    x = 1,774,745,306,183.26/1,420,554.66
  6. Step 6: Final answer
    x = 1,249,332.64

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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.