Home / 419,904,493.60-629,856,740.40-290,238,138.40

Finding the Fourth Proportional to 419,904,493.60, 629,856,740.40 and 290,238,138.40

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Solution

The fourth proportional to 419,904,493.60, 629,856,740.40 and 290,238,138.40 is: 435,357,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,493.60 : 629,856,740.40 = 290,238,138.40 : x
  2. Step 2: Convert to fraction form
    419,904,493.60/629,856,740.40 = 290,238,138.40/x
  3. Step 3: Cross multiply
    419,904,493.60x = 629,856,740.40 × 290,238,138.40
  4. Step 4: Simplify right side
    419,904,493.60x = 182,808,447,792,388,064
  5. Step 5: Solve for x
    x = 182,808,447,792,388,064/419,904,493.60
  6. Step 6: Final answer
    x = 435,357,207.60

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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.