Home / 1,212,128.84-1,672,662.14-668,264.64

Finding the Fourth Proportional to 1,212,128.84, 1,672,662.14 and 668,264.64

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Solution

The fourth proportional to 1,212,128.84, 1,672,662.14 and 668,264.64 is: 922,163.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,128.84 : 1,672,662.14 = 668,264.64 : x
  2. Step 2: Convert to fraction form
    1,212,128.84/1,672,662.14 = 668,264.64/x
  3. Step 3: Cross multiply
    1,212,128.84x = 1,672,662.14 × 668,264.64
  4. Step 4: Simplify right side
    1,212,128.84x = 1,117,780,962,828.73
  5. Step 5: Solve for x
    x = 1,117,780,962,828.73/1,212,128.84
  6. Step 6: Final answer
    x = 922,163.49

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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.