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Finding the Fourth Proportional to 443,743.80, 665,615.70 and 275,782.20

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Solution

The fourth proportional to 443,743.80, 665,615.70 and 275,782.20 is: 413,673.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,743.80 : 665,615.70 = 275,782.20 : x
  2. Step 2: Convert to fraction form
    443,743.80/665,615.70 = 275,782.20/x
  3. Step 3: Cross multiply
    443,743.80x = 665,615.70 × 275,782.20
  4. Step 4: Simplify right side
    443,743.80x = 183,564,962,100.54
  5. Step 5: Solve for x
    x = 183,564,962,100.54/443,743.80
  6. Step 6: Final answer
    x = 413,673.30

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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.