Home / 1,212,121.60-1,672,753.12-668,280.30

Finding the Fourth Proportional to 1,212,121.60, 1,672,753.12 and 668,280.30

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Solution

The fourth proportional to 1,212,121.60, 1,672,753.12 and 668,280.30 is: 922,240.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,121.60 : 1,672,753.12 = 668,280.30 : x
  2. Step 2: Convert to fraction form
    1,212,121.60/1,672,753.12 = 668,280.30/x
  3. Step 3: Cross multiply
    1,212,121.60x = 1,672,753.12 × 668,280.30
  4. Step 4: Simplify right side
    1,212,121.60x = 1,117,867,956,859.54
  5. Step 5: Solve for x
    x = 1,117,867,956,859.54/1,212,121.60
  6. Step 6: Final answer
    x = 922,240.77

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1.5x scale

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.