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Finding the Fourth Proportional to 860,549,891, 1,290,829,560.42 and 214,317,635

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Solution

The fourth proportional to 860,549,891, 1,290,829,560.42 and 214,317,635 is: 321,477,628.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,549,891 : 1,290,829,560.42 = 214,317,635 : x
  2. Step 2: Convert to fraction form
    860,549,891/1,290,829,560.42 = 214,317,635/x
  3. Step 3: Cross multiply
    860,549,891x = 1,290,829,560.42 × 214,317,635
  4. Step 4: Simplify right side
    860,549,891x = 276,647,538,577,304,032
  5. Step 5: Solve for x
    x = 276,647,538,577,304,032/860,549,891
  6. Step 6: Final answer
    x = 321,477,628.98

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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.