Home / 1,916,311.64-2,643,842.21-1,228,362.75

Finding the Fourth Proportional to 1,916,311.64, 2,643,842.21 and 1,228,362.75

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Solution

The fourth proportional to 1,916,311.64, 2,643,842.21 and 1,228,362.75 is: 1,694,712.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916,311.64 : 2,643,842.21 = 1,228,362.75 : x
  2. Step 2: Convert to fraction form
    1,916,311.64/2,643,842.21 = 1,228,362.75/x
  3. Step 3: Cross multiply
    1,916,311.64x = 2,643,842.21 × 1,228,362.75
  4. Step 4: Simplify right side
    1,916,311.64x = 3,247,597,281,499.86
  5. Step 5: Solve for x
    x = 3,247,597,281,499.86/1,916,311.64
  6. Step 6: Final answer
    x = 1,694,712.50

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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.