Home / 1,212,506.64-1,673,223.12-668,642.40

Finding the Fourth Proportional to 1,212,506.64, 1,673,223.12 and 668,642.40

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Solution

The fourth proportional to 1,212,506.64, 1,673,223.12 and 668,642.40 is: 922,706.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,506.64 : 1,673,223.12 = 668,642.40 : x
  2. Step 2: Convert to fraction form
    1,212,506.64/1,673,223.12 = 668,642.40/x
  3. Step 3: Cross multiply
    1,212,506.64x = 1,673,223.12 × 668,642.40
  4. Step 4: Simplify right side
    1,212,506.64x = 1,118,787,922,692.29
  5. Step 5: Solve for x
    x = 1,118,787,922,692.29/1,212,506.64
  6. Step 6: Final answer
    x = 922,706.64

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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.