Home / 783,280-1,080,927.48-443,771.20

Finding the Fourth Proportional to 783,280, 1,080,927.48 and 443,771.20

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Solution

The fourth proportional to 783,280, 1,080,927.48 and 443,771.20 is: 612,404.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,280 : 1,080,927.48 = 443,771.20 : x
  2. Step 2: Convert to fraction form
    783,280/1,080,927.48 = 443,771.20/x
  3. Step 3: Cross multiply
    783,280x = 1,080,927.48 × 443,771.20
  4. Step 4: Simplify right side
    783,280x = 479,684,484,912.58
  5. Step 5: Solve for x
    x = 479,684,484,912.58/783,280
  6. Step 6: Final answer
    x = 612,404.87

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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.