Home / 419,905,511.60-629,858,267.40-213,281,250.80

Finding the Fourth Proportional to 419,905,511.60, 629,858,267.40 and 213,281,250.80

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Solution

The fourth proportional to 419,905,511.60, 629,858,267.40 and 213,281,250.80 is: 319,921,876.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,511.60 : 629,858,267.40 = 213,281,250.80 : x
  2. Step 2: Convert to fraction form
    419,905,511.60/629,858,267.40 = 213,281,250.80/x
  3. Step 3: Cross multiply
    419,905,511.60x = 629,858,267.40 × 213,281,250.80
  4. Step 4: Simplify right side
    419,905,511.60x = 134,336,959,097,792,864
  5. Step 5: Solve for x
    x = 134,336,959,097,792,864/419,905,511.60
  6. Step 6: Final answer
    x = 319,921,876.20

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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.