Home / 419,904,005.80-629,856,008.70-379,727,066.20

Finding the Fourth Proportional to 419,904,005.80, 629,856,008.70 and 379,727,066.20

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Solution

The fourth proportional to 419,904,005.80, 629,856,008.70 and 379,727,066.20 is: 569,590,599.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,005.80 : 629,856,008.70 = 379,727,066.20 : x
  2. Step 2: Convert to fraction form
    419,904,005.80/629,856,008.70 = 379,727,066.20/x
  3. Step 3: Cross multiply
    419,904,005.80x = 629,856,008.70 × 379,727,066.20
  4. Step 4: Simplify right side
    419,904,005.80x = 239,173,374,312,092,672
  5. Step 5: Solve for x
    x = 239,173,374,312,092,672/419,904,005.80
  6. Step 6: Final answer
    x = 569,590,599.30

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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.