Home / 1,421,183.60-1,961,345.16-809,362.24

Finding the Fourth Proportional to 1,421,183.60, 1,961,345.16 and 809,362.24

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Solution

The fourth proportional to 1,421,183.60, 1,961,345.16 and 809,362.24 is: 1,116,983.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,183.60 : 1,961,345.16 = 809,362.24 : x
  2. Step 2: Convert to fraction form
    1,421,183.60/1,961,345.16 = 809,362.24/x
  3. Step 3: Cross multiply
    1,421,183.60x = 1,961,345.16 × 809,362.24
  4. Step 4: Simplify right side
    1,421,183.60x = 1,587,438,712,110.76
  5. Step 5: Solve for x
    x = 1,587,438,712,110.76/1,421,183.60
  6. Step 6: Final answer
    x = 1,116,983.56

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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.