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Finding the Fourth Proportional to 299,355,853.80, 419,904,411 and 299,355,853.80

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Solution

The fourth proportional to 299,355,853.80, 419,904,411 and 299,355,853.80 is: 419,904,411

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,355,853.80 : 419,904,411 = 299,355,853.80 : x
  2. Step 2: Convert to fraction form
    299,355,853.80/419,904,411 = 299,355,853.80/x
  3. Step 3: Cross multiply
    299,355,853.80x = 419,904,411 × 299,355,853.80
  4. Step 4: Simplify right side
    299,355,853.80x = 125,700,843,469,291,120
  5. Step 5: Solve for x
    x = 125,700,843,469,291,120/299,355,853.80
  6. Step 6: Final answer
    x = 419,904,411

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.