Home / 890,516.28-1,334,981.61-321,770.53

Finding the Fourth Proportional to 890,516.28, 1,334,981.61 and 321,770.53

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Solution

The fourth proportional to 890,516.28, 1,334,981.61 and 321,770.53 is: 482,369.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,516.28 : 1,334,981.61 = 321,770.53 : x
  2. Step 2: Convert to fraction form
    890,516.28/1,334,981.61 = 321,770.53/x
  3. Step 3: Cross multiply
    890,516.28x = 1,334,981.61 × 321,770.53
  4. Step 4: Simplify right side
    890,516.28x = 429,557,738,581.10
  5. Step 5: Solve for x
    x = 429,557,738,581.10/890,516.28
  6. Step 6: Final answer
    x = 482,369.33

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1.5x scale

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.