Home / 920,473.79-1,380,677.88-321,432.62

Finding the Fourth Proportional to 920,473.79, 1,380,677.88 and 321,432.62

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Solution

The fourth proportional to 920,473.79, 1,380,677.88 and 321,432.62 is: 482,137.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,473.79 : 1,380,677.88 = 321,432.62 : x
  2. Step 2: Convert to fraction form
    920,473.79/1,380,677.88 = 321,432.62/x
  3. Step 3: Cross multiply
    920,473.79x = 1,380,677.88 × 321,432.62
  4. Step 4: Simplify right side
    920,473.79x = 443,794,901,441.06
  5. Step 5: Solve for x
    x = 443,794,901,441.06/920,473.79
  6. Step 6: Final answer
    x = 482,137.47

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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.