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Finding the Fourth Proportional to 783,279, 1,080,926.10 and 443,770.20

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Solution

The fourth proportional to 783,279, 1,080,926.10 and 443,770.20 is: 612,403.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,279 : 1,080,926.10 = 443,770.20 : x
  2. Step 2: Convert to fraction form
    783,279/1,080,926.10 = 443,770.20/x
  3. Step 3: Cross multiply
    783,279x = 1,080,926.10 × 443,770.20
  4. Step 4: Simplify right side
    783,279x = 479,682,791,582.22
  5. Step 5: Solve for x
    x = 479,682,791,582.22/783,279
  6. Step 6: Final answer
    x = 612,403.49

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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.