Home / 419,905,511.10-629,858,266.65-213,281,250.30

Finding the Fourth Proportional to 419,905,511.10, 629,858,266.65 and 213,281,250.30

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Solution

The fourth proportional to 419,905,511.10, 629,858,266.65 and 213,281,250.30 is: 319,921,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,511.10 : 629,858,266.65 = 213,281,250.30 : x
  2. Step 2: Convert to fraction form
    419,905,511.10/629,858,266.65 = 213,281,250.30/x
  3. Step 3: Cross multiply
    419,905,511.10x = 629,858,266.65 × 213,281,250.30
  4. Step 4: Simplify right side
    419,905,511.10x = 134,336,958,622,902,800
  5. Step 5: Solve for x
    x = 134,336,958,622,902,800/419,905,511.10
  6. Step 6: Final answer
    x = 319,921,875.45

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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.