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Finding the Fourth Proportional to 664,849,969.80, 997,274,954.70 and 629,137,134.60

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Solution

The fourth proportional to 664,849,969.80, 997,274,954.70 and 629,137,134.60 is: 943,705,701.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,849,969.80 : 997,274,954.70 = 629,137,134.60 : x
  2. Step 2: Convert to fraction form
    664,849,969.80/997,274,954.70 = 629,137,134.60/x
  3. Step 3: Cross multiply
    664,849,969.80x = 997,274,954.70 × 629,137,134.60
  4. Step 4: Simplify right side
    664,849,969.80x = 627,422,707,408,302,848
  5. Step 5: Solve for x
    x = 627,422,707,408,302,848/664,849,969.80
  6. Step 6: Final answer
    x = 943,705,701.90

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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.