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Finding the Fourth Proportional to 410,761.80, 567,239.10 and 388,396.80

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Solution

The fourth proportional to 410,761.80, 567,239.10 and 388,396.80 is: 536,354.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,761.80 : 567,239.10 = 388,396.80 : x
  2. Step 2: Convert to fraction form
    410,761.80/567,239.10 = 388,396.80/x
  3. Step 3: Cross multiply
    410,761.80x = 567,239.10 × 388,396.80
  4. Step 4: Simplify right side
    410,761.80x = 220,313,851,274.88
  5. Step 5: Solve for x
    x = 220,313,851,274.88/410,761.80
  6. Step 6: Final answer
    x = 536,354.28

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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.