Home / 419,905,968.30-629,858,952.45-389,294,966.70

Finding the Fourth Proportional to 419,905,968.30, 629,858,952.45 and 389,294,966.70

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Solution

The fourth proportional to 419,905,968.30, 629,858,952.45 and 389,294,966.70 is: 583,942,450.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,968.30 : 629,858,952.45 = 389,294,966.70 : x
  2. Step 2: Convert to fraction form
    419,905,968.30/629,858,952.45 = 389,294,966.70/x
  3. Step 3: Cross multiply
    419,905,968.30x = 629,858,952.45 × 389,294,966.70
  4. Step 4: Simplify right side
    419,905,968.30x = 245,200,919,919,719,648
  5. Step 5: Solve for x
    x = 245,200,919,919,719,648/419,905,968.30
  6. Step 6: Final answer
    x = 583,942,450.05

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1.5x scale

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.