Home / 1,212,800.40-1,820,512.80-681,359.40

Finding the Fourth Proportional to 1,212,800.40, 1,820,512.80 and 681,359.40

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Solution

The fourth proportional to 1,212,800.40, 1,820,512.80 and 681,359.40 is: 1,022,776.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,800.40 : 1,820,512.80 = 681,359.40 : x
  2. Step 2: Convert to fraction form
    1,212,800.40/1,820,512.80 = 681,359.40/x
  3. Step 3: Cross multiply
    1,212,800.40x = 1,820,512.80 × 681,359.40
  4. Step 4: Simplify right side
    1,212,800.40x = 1,240,423,509,100.32
  5. Step 5: Solve for x
    x = 1,240,423,509,100.32/1,212,800.40
  6. Step 6: Final answer
    x = 1,022,776.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.