Home / 419,904,985.20-629,857,477.80-317,868,313.20

Finding the Fourth Proportional to 419,904,985.20, 629,857,477.80 and 317,868,313.20

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Solution

The fourth proportional to 419,904,985.20, 629,857,477.80 and 317,868,313.20 is: 476,802,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,985.20 : 629,857,477.80 = 317,868,313.20 : x
  2. Step 2: Convert to fraction form
    419,904,985.20/629,857,477.80 = 317,868,313.20/x
  3. Step 3: Cross multiply
    419,904,985.20x = 629,857,477.80 × 317,868,313.20
  4. Step 4: Simplify right side
    419,904,985.20x = 200,211,734,024,692,416
  5. Step 5: Solve for x
    x = 200,211,734,024,692,416/419,904,985.20
  6. Step 6: Final answer
    x = 476,802,469.80

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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.