Home / 782,923.03-1,080,401.12-443,391.28

Finding the Fourth Proportional to 782,923.03, 1,080,401.12 and 443,391.28

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Solution

The fourth proportional to 782,923.03, 1,080,401.12 and 443,391.28 is: 611,861.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,923.03 : 1,080,401.12 = 443,391.28 : x
  2. Step 2: Convert to fraction form
    782,923.03/1,080,401.12 = 443,391.28/x
  3. Step 3: Cross multiply
    782,923.03x = 1,080,401.12 × 443,391.28
  4. Step 4: Simplify right side
    782,923.03x = 479,040,432,254.99
  5. Step 5: Solve for x
    x = 479,040,432,254.99/782,923.03
  6. Step 6: Final answer
    x = 611,861.47

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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.