Home / 890,405.60-1,335,690.92-321,928.88

Finding the Fourth Proportional to 890,405.60, 1,335,690.92 and 321,928.88

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Solution

The fourth proportional to 890,405.60, 1,335,690.92 and 321,928.88 is: 482,923.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,405.60 : 1,335,690.92 = 321,928.88 : x
  2. Step 2: Convert to fraction form
    890,405.60/1,335,690.92 = 321,928.88/x
  3. Step 3: Cross multiply
    890,405.60x = 1,335,690.92 × 321,928.88
  4. Step 4: Simplify right side
    890,405.60x = 429,997,481,901.77
  5. Step 5: Solve for x
    x = 429,997,481,901.77/890,405.60
  6. Step 6: Final answer
    x = 482,923.16

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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.