Home / 556,924,907.72-768,511,379.94-321,990,708.44

Finding the Fourth Proportional to 556,924,907.72, 768,511,379.94 and 321,990,708.44

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Solution

The fourth proportional to 556,924,907.72, 768,511,379.94 and 321,990,708.44 is: 444,321,164.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,924,907.72 : 768,511,379.94 = 321,990,708.44 : x
  2. Step 2: Convert to fraction form
    556,924,907.72/768,511,379.94 = 321,990,708.44/x
  3. Step 3: Cross multiply
    556,924,907.72x = 768,511,379.94 × 321,990,708.44
  4. Step 4: Simplify right side
    556,924,907.72x = 247,453,523,671,082,624
  5. Step 5: Solve for x
    x = 247,453,523,671,082,624/556,924,907.72
  6. Step 6: Final answer
    x = 444,321,164.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.