Home / 1,212,035.80-1,672,620.72-668,191.12

Finding the Fourth Proportional to 1,212,035.80, 1,672,620.72 and 668,191.12

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Solution

The fourth proportional to 1,212,035.80, 1,672,620.72 and 668,191.12 is: 922,109.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,035.80 : 1,672,620.72 = 668,191.12 : x
  2. Step 2: Convert to fraction form
    1,212,035.80/1,672,620.72 = 668,191.12/x
  3. Step 3: Cross multiply
    1,212,035.80x = 1,672,620.72 × 668,191.12
  4. Step 4: Simplify right side
    1,212,035.80x = 1,117,630,303,868.90
  5. Step 5: Solve for x
    x = 1,117,630,303,868.90/1,212,035.80
  6. Step 6: Final answer
    x = 922,109.98

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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.