Home / 556,924,842.72-768,511,290.15-321,990,643.26

Finding the Fourth Proportional to 556,924,842.72, 768,511,290.15 and 321,990,643.26

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Solution

The fourth proportional to 556,924,842.72, 768,511,290.15 and 321,990,643.26 is: 444,321,074.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,924,842.72 : 768,511,290.15 = 321,990,643.26 : x
  2. Step 2: Convert to fraction form
    556,924,842.72/768,511,290.15 = 321,990,643.26/x
  3. Step 3: Cross multiply
    556,924,842.72x = 768,511,290.15 × 321,990,643.26
  4. Step 4: Simplify right side
    556,924,842.72x = 247,453,444,667,970,976
  5. Step 5: Solve for x
    x = 247,453,444,667,970,976/556,924,842.72
  6. Step 6: Final answer
    x = 444,321,074.74

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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.