Home / 419,904,401.40-629,856,602.10-266,723,422.20

Finding the Fourth Proportional to 419,904,401.40, 629,856,602.10 and 266,723,422.20

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Solution

The fourth proportional to 419,904,401.40, 629,856,602.10 and 266,723,422.20 is: 400,085,133.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,401.40 : 629,856,602.10 = 266,723,422.20 : x
  2. Step 2: Convert to fraction form
    419,904,401.40/629,856,602.10 = 266,723,422.20/x
  3. Step 3: Cross multiply
    419,904,401.40x = 629,856,602.10 × 266,723,422.20
  4. Step 4: Simplify right side
    419,904,401.40x = 167,997,508,407,375,712
  5. Step 5: Solve for x
    x = 167,997,508,407,375,712/419,904,401.40
  6. Step 6: Final answer
    x = 400,085,133.30

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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.