Home / 783,280.50-1,080,928.17-443,771.70

Finding the Fourth Proportional to 783,280.50, 1,080,928.17 and 443,771.70

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Solution

The fourth proportional to 783,280.50, 1,080,928.17 and 443,771.70 is: 612,405.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,280.50 : 1,080,928.17 = 443,771.70 : x
  2. Step 2: Convert to fraction form
    783,280.50/1,080,928.17 = 443,771.70/x
  3. Step 3: Cross multiply
    783,280.50x = 1,080,928.17 × 443,771.70
  4. Step 4: Simplify right side
    783,280.50x = 479,685,331,578.79
  5. Step 5: Solve for x
    x = 479,685,331,578.79/783,280.50
  6. Step 6: Final answer
    x = 612,405.56

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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.