Home / 890,928.80-1,336,393.20-838,440.80

Finding the Fourth Proportional to 890,928.80, 1,336,393.20 and 838,440.80

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Solution

The fourth proportional to 890,928.80, 1,336,393.20 and 838,440.80 is: 1,257,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,928.80 : 1,336,393.20 = 838,440.80 : x
  2. Step 2: Convert to fraction form
    890,928.80/1,336,393.20 = 838,440.80/x
  3. Step 3: Cross multiply
    890,928.80x = 1,336,393.20 × 838,440.80
  4. Step 4: Simplify right side
    890,928.80x = 1,120,486,583,722.56
  5. Step 5: Solve for x
    x = 1,120,486,583,722.56/890,928.80
  6. Step 6: Final answer
    x = 1,257,661.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.