Home / 1,212,206.64-1,672,857-668,361.84

Finding the Fourth Proportional to 1,212,206.64, 1,672,857 and 668,361.84

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Solution

The fourth proportional to 1,212,206.64, 1,672,857 and 668,361.84 is: 922,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,206.64 : 1,672,857 = 668,361.84 : x
  2. Step 2: Convert to fraction form
    1,212,206.64/1,672,857 = 668,361.84/x
  3. Step 3: Cross multiply
    1,212,206.64x = 1,672,857 × 668,361.84
  4. Step 4: Simplify right side
    1,212,206.64x = 1,118,073,782,576.88
  5. Step 5: Solve for x
    x = 1,118,073,782,576.88/1,212,206.64
  6. Step 6: Final answer
    x = 922,345.87

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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.