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Finding the Fourth Proportional to 519,629.80, 779,444.70 and 443,522.20

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Solution

The fourth proportional to 519,629.80, 779,444.70 and 443,522.20 is: 665,283.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,629.80 : 779,444.70 = 443,522.20 : x
  2. Step 2: Convert to fraction form
    519,629.80/779,444.70 = 443,522.20/x
  3. Step 3: Cross multiply
    519,629.80x = 779,444.70 × 443,522.20
  4. Step 4: Simplify right side
    519,629.80x = 345,701,028,122.34
  5. Step 5: Solve for x
    x = 345,701,028,122.34/519,629.80
  6. Step 6: Final answer
    x = 665,283.30

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Similar ratio
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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.